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JEE Main 2026 (Online) 4th April Evening Shift

75 questions with answers and solutions.

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Physics 25 questions

Ques. 1JEE Main 2026, 4 April (Evening Shift)

Match the List-I with List-II Choose the correct answer from the options given below :

  1. A-III, B-IV, C-I, D-II
  2. A-I, B-II, C-III, D-IV
  3. A-IV, B-III, C-I, D-II
  4. A-I, B-IV, C-III, D-II
Ques. 2JEE Main 2026, 4 April (Evening Shift)

Two cars A and B are moving in the same direction along a straight line with speeds 100 km/h and 80 km/h, respectively such that car A is moving ahead of car B. A person in car B throws a stone with a speed v so that it hits the car A with a speed of 5 m/s. The value of v is km/h.

  1. 18
  2. 28
  3. 38
  4. 48
Ques. 3JEE Main 2026, 4 April (Evening Shift)

At t=0, a body of mass 100 g starts moving under the influence of a force (5 i+10 j ) N. After 2 s its position is (2x i+5y j ) m. The ratio x:y is .

  1. 1 : 2
  2. 2 : 5
  3. 5 : 2
  4. 5 : 4
Ques. 4JEE Main 2026, 4 April (Evening Shift)

If x and y coordinates of a projectile as a function of time (t) are given as 24t and 43.6t-4.9t2, respectively, then the angle (in degrees) made by the projectile with horizontal when t=2 s is .

  1. 60
  2. 45
  3. 30
  4. 75
Ques. 5JEE Main 2026, 4 April (Evening Shift)

The height in terms of radius of the earth (R), at which the acceleration due to gravity becomes g9, where g is acceleration due to gravity on earth's surface, is .

  1. 3R
  2. 2 2R
  3. 2R
  4. 49R
Ques. 6JEE Main 2026, 4 April (Evening Shift)

A metal string A is suspended from a rigid support and its free end is attached to a block of mass M. Second block having mass 2M is suspended at the bottom of the first block using a string B. The area of cross sections of strings A and B are same. The ratio of lengths of strings of A to B is 2 and the ratio of their Young's moduli (YA/YB ) is 0.5. The ratio of elongations in A to B is .

  1. 1
  2. 4
  3. 8
  4. 6
Ques. 7JEE Main 2026, 4 April (Evening Shift)

A water spray gun is attached to a hose of cross sectional area 30 cm2. The gun comprises of 10 perforations each of cross sectional area of 15 mm2. If the water flows in the hose with the speed of 50 cm/s, calculate the speed at which the water flows out from each perforation. (Neglect any edge effects)

  1. 100 m/s
  2. 10 m/s
  3. 1000 m/s
  4. 15 102 m/s
Ques. 8JEE Main 2026, 4 April (Evening Shift)

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Choose the correct answer from the options given below :

  1. Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  3. (A) is true but (R) is false
  4. (A) is false but (R) is true
Ques. 9JEE Main 2026, 4 April (Evening Shift)

The temperature of a metal strip having coefficient of linear expansion is increased from T1 to T2 resulting in increase of its length by L1. The temperature is further increased from T2 to T3 such that the increase in its length is L2. Given T3+T1=2T2 and T2-T1= T, the value of L2 is .

  1. L1 [1+2 2( T)2 ]
  2. L1 [1+ 2( T)2 ]
  3. L1 [1+2 T ]
  4. L1 [1+ T ]
Ques. 10JEE Main 2026, 4 April (Evening Shift)

A uniform disc of radius R and mass M is free to oscillate about the axis A as shown in the figure. For small oscillations the time period is . (g is acceleration due to gravity) [figure]

  1. 2 5R4g
  2. 2 2R3g
  3. 2 3R2g
  4. 2 3Rg
Ques. 11JEE Main 2026, 4 April (Evening Shift)

A rigid dipole undergoes a simple harmonic motion about its centre in the presence of an electric field E1=E0 x. If another electric field E2=2E0 ( y+ z ) is introduced to the system, what will be the percentage change in the frequency of the oscillation (approximate)?

  1. 73%
  2. 63%
  3. 83%
  4. 53%
Ques. 12JEE Main 2026, 4 April (Evening Shift)

From the circuit given below, the capacitance between terminals A and B shown in the circuit is μF. (take C1=C2=C3=1 μF and C4=2 μF.) [figure]

  1. 2
  2. 7/2
  3. 7/3
  4. 5/2
Ques. 13JEE Main 2026, 4 April (Evening Shift)

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Choose the correct answer from the options given below :

  1. Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  3. (A) is true but (R) is false
  4. (A) is false but (R) is true
Ques. 14JEE Main 2026, 4 April (Evening Shift)

A solenoid has a core made of material with relative permeability 400. The magnetic field produced in the interior of solenoid is 1.0 T. The magnetic intensity in SI units is 105. The value of is . (Free space permeability 0=4 10-7 SI units.)

  1. 25
  2. 116
  3. 1
  4. 14
Ques. 15JEE Main 2026, 4 April (Evening Shift)

A magnetic field vector in an electromagnetic wave is represented by B=B0 (2 t- 2 x ) j. Its associated electric field vector is .

  1. E=- B0 (2 t- 2 x ) k
  2. E=- B0 (2 t- 2 x ) i
  3. E= B0 (2 t- 2 x ) k
  4. E= B0 (2 t- 2 x ) i
Ques. 16JEE Main 2026, 4 April (Evening Shift)

A convex lens is made from glass material having refractive index of 1.4 with same radius of curvature on both sides. The ratio of its focal length and radius of curvature is .

  1. 0.5
  2. 2.5
  3. 0.8
  4. 1.25
Ques. 17JEE Main 2026, 4 April (Evening Shift)

An unpolarized light of certain intensity passes through a combination of two polarizers whose transmission axes are at 30° and 90°, respectively, with respect to the horizontal axis. A third polarizer with its transmission axis at 60° with the horizontal axis is placed between the two existing polarizers. The ratio of the output intensities with and without the third polarizer is .

  1. 3/4
  2. 4/3
  3. 9/4
  4. 4/9
Ques. 18JEE Main 2026, 4 April (Evening Shift)

In Rutherford's alpha-particle scattering experiment, only a few alpha particles rebound back because Choose the correct answer from the options given below :

  1. A, B Only
  2. B, E Only
  3. C, D Only
  4. A, C, E Only
Ques. 19JEE Main 2026, 4 April (Evening Shift)

The de Broglie wavelength associated with an electron accelerated through a potential difference V is e and the de Broglie wavelength associated with a proton accelerated through the same potential difference is p. If their corresponding masses are me and mp, respectively, then the ratio of their de Broglie wavelengths ( e p ) is .

  1. mpme
  2. memp
  3. mpme
  4. ( mpme )2
Ques. 20JEE Main 2026, 4 April (Evening Shift)

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Choose the correct answer from the options given below :

  1. Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  3. (A) is true but (R) is false
  4. (A) is false but (R) is true
Ques. 21JEE Main 2026, 4 April (Evening Shift)

A diode has Zener voltage of 10 V and maximum power dissipation of 0.5 W, then the minimum resistance to be used in series with this diode for safety when it is connected to a 25 V power supply is Ω.

Ques. 22JEE Main 2026, 4 April (Evening Shift)

A gun mounted on the ground fires bullets in all directions with same speed. The farthest distance the bullets could reach is 6.4 m. The speed of the bullets from the gun is m/s. (take g=10 m/s2)

Ques. 23JEE Main 2026, 4 April (Evening Shift)

Two identical small bar magnets each of dipole moment 3 5 J/T are placed at a center to center separation of 10 cm, with their axes perpendicular to each other as shown in figure. The value of magnetic field at the point P midway between the magnets is 10-3 T. The value of is . ( 0=4 10-7 Tm/A) [figure]

Ques. 24JEE Main 2026, 4 April (Evening Shift)

A circular coil of radius 2 cm and 125 turns carries a current of 1 A. The coil is placed in a uniform magnetic field of magnitude 0.4 T. The axis of the coil makes an angle of 30° with the direction of the magnetic field. The torque acting on the coil is 10-4 N m. The value of is . ( =3.14)

Ques. 25JEE Main 2026, 4 April (Evening Shift)

In a double slit experiment, when one of the slits is covered by a transparent mica sheet of refractive index 1.56, the central fringe shifts to the position of 7th bright fringe, obtained with both slits uncovered. If the light source wavelength is 450 nm, the thickness of mica sheet is 10-9 m. The value of is .

Chemistry 25 questions

Ques. 26JEE Main 2026, 4 April (Evening Shift)

The correct order of total number of atoms present in (A) 2 moles of cyclohexane (B) 684 g of sucrose (C) 90.8 L of dihydrogen at STP is :

  1. C > A > B
  2. C > B > A
  3. B > C > A
  4. B > A > C
Ques. 27JEE Main 2026, 4 April (Evening Shift)

The species having identical radii according to the Bohr's theory are : Choose the correct answer from the options given below :

  1. A and C Only
  2. A and E Only
  3. B and E Only
  4. C and D Only
Ques. 28JEE Main 2026, 4 April (Evening Shift)

Which of the following pictorial diagrams most correctly represents the * ( antibonding) molecular orbital between two atoms if the internuclear axis is taken to be in the z-direction ( z-axis) ?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 29JEE Main 2026, 4 April (Evening Shift)

At 27 °C, 0.1 M, 1 L K4[Fe(CN)6] aqueous solution and 0.1 M, 1 L FeCl3 aqueous solution are placed in a container separated by a semi permeable membrane AB. Assume complete dissociation of both the solutes. Which of the following statement is correct? [figure]

  1. Blue color is formed on both sides.
  2. Ionic solutes in aqueous solution can pass through semi-permeable membrane.
  3. Solution on side 'y' is hypotonic.
  4. To cause the reverse flow of solvent during osmosis, external pressure (any value) should be applied to side 'x'.
Ques. 30JEE Main 2026, 4 April (Evening Shift)

20 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution (X) was prepared by mixing 20 mL of the above acetic acid and 14.2 mL of 0.1 M NaOH solution. What is the pH of the solution (X)? (pKa value of acetic acid is 4.75).

  1. 7.0
  2. 4.75
  3. 3.5
  4. 4.82
Ques. 31JEE Main 2026, 4 April (Evening Shift)

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

  1. A-III, B-I, C-II, D-IV
  2. A-III, B-IV, C-II, D-I
  3. A-III, B-IV, C-I, D-II
  4. A-I, B-III, C-IV, D-II
Ques. 32JEE Main 2026, 4 April (Evening Shift)

The 1st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd ionization enthalpy of Mg is .

  1. −906 kJ/mol
  2. −856 kJ/mol
  3. +1450 kJ/mol
  4. +590 kJ/mol
Ques. 33JEE Main 2026, 4 April (Evening Shift)

The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT statements about E3+ are Choose the correct answer from the options given below :

  1. A and C Only
  2. B and C Only
  3. B and D Only
  4. A and D Only
Ques. 34JEE Main 2026, 4 April (Evening Shift)

Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number. Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72] Choose the correct answer from the options given below :

  1. B and C Only
  2. A and B Only
  3. A and D Only
  4. A and C Only
Ques. 35JEE Main 2026, 4 April (Evening Shift)

Consider the metal complexes [Ni(en)3]2+ (A), [NiCl4]2- (B) and [Ni(NH3)6]2+ (C). Choose the CORRECT option by considering the number of unpaired electrons present in (A), (B) and (C) respectively and the order of frequency of absorption.

  1. 2, 2, 2 and (A) > (C) > (B)
  2. 0, 2, 0 and (A) > (C) > (B)
  3. 2, 2, 0 and (B) > (C) > (A)
  4. 2, 2, 2 and (C) > (A) > (B)
Ques. 36JEE Main 2026, 4 April (Evening Shift)

Consider the following molecules/species : [figure] The correct order of carbon-oxygen double bond length is :

  1. x > y > z
  2. y > z > x
  3. z > x > y
  4. x > z > y
Ques. 37JEE Main 2026, 4 April (Evening Shift)

Consider |x| is the difference in oxidation states of Mn in highest manganese fluoride and highest manganese oxide. The ions with |x| number of unpaired electrons from the following are : Choose the correct answer from the options given below :

  1. A and B Only
  2. C, D and E Only
  3. C and E Only
  4. B and E Only
Ques. 38JEE Main 2026, 4 April (Evening Shift)

Consider the given graph showing variation of reactant concentration with time. Three different reactions were started with identical initial concentration of reactants. Which of the following statement is correct? [figure]

  1. The order of all the three reactions is same.
  2. The rate constant of reaction 3 is larger than the rate constant of reaction 2 if the order of reaction is same for both.
  3. The SI unit of rate constant of reaction 1 is s-1.
  4. Thermal decomposition of HI on gold surface is an example of reaction 2.
Ques. 39JEE Main 2026, 4 April (Evening Shift)

[figure] Compound (X) is subjected to the sequence of reactions as shown above. Molar mass of the major product (Y) formed is g mol-1. (Given molar mass in g mol-1 C : 12, H : 1, O : 16 )

  1. 90
  2. 118
  3. 160
  4. 125
Ques. 40JEE Main 2026, 4 April (Evening Shift)

The following structures are : [figure]

  1. enantiomers.
  2. identical molecules.
  3. diastereomers.
  4. meso compounds.
Ques. 41JEE Main 2026, 4 April (Evening Shift)

The descending order of acidity among the following compounds is : [figure] Choose the correct answer from the options given below :

  1. B > D > E > A > C
  2. D > B > E > A > C
  3. C > A > B > D > E
  4. D > E > B > A > C
Ques. 42JEE Main 2026, 4 April (Evening Shift)

The strongest conjugate acid will result from:

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 43JEE Main 2026, 4 April (Evening Shift)

A D-aldotetrose on oxidation with concentrated HNO3 resulted in optically inactive dicarboxylic acid. The structure of the D-aldotetrose is:

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 44JEE Main 2026, 4 April (Evening Shift)

Among Fe3+, Pb2+, Cu2+ and Mn2+, identify the one that gets precipitated out while passing H2S in presence of NH4OH as group reagent. The highest possible oxidation state of the corresponding metal is

  1. +3
  2. +4
  3. +2
  4. +7
Ques. 45JEE Main 2026, 4 April (Evening Shift)

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

  1. A-III, B-I, C-IV, D-II
  2. A-III, B-IV, C-I, D-II
  3. A-I, B-III, C-II, D-IV
  4. A-I, B-II, C-III, D-IV
Ques. 46JEE Main 2026, 4 April (Evening Shift)

If 3.365 g of ethanol (l) is burnt completely in a bomb calorimeter at 298.15 K, the heat produced is 99.472 kJ. The | Hf | of ethanol at 298.15 K is 102 kJ mol-1. (Nearest integer) Given: Standard enthalpy for combustion of graphite = −393.5 kJ mol-1 Standard enthalpy of formation of water (l) = −285.8 kJ mol-1 Molar mass in g mol-1 of C, H, O are 12, 1 and 16 respectively

Ques. 47JEE Main 2026, 4 April (Evening Shift)

For the following reaction at 50 °C and at 2 atm pressure, 2N2O5(g) 2N2O4(g) + O2(g) N2O5 is 50% dissociated. The magnitude of standard free energy change at this temperature is x. x = J mol-1 [Nearest integer]. Given : R = 8.314 J mol-1 K-1, log 2 = 0.30, log 3 = 0.48, ln 10 = 2.303, °C + 273 = K

Ques. 48JEE Main 2026, 4 April (Evening Shift)

An electrochemical cell consists of the following two redox couples, Mx+(aq)/M(s) [E red = +0.15 V] and Fe3+(aq)/Fe(s) [E red = -0.036 V]. The cell EMF ( Ecell) is recorded to be 0.2057 V. If the reaction quotient of the electrochemical reaction is found to be 10-2, then the value of x is . (Nearest integer) [Given : M is a p-block metal and 2.303RTF = 0.059 V]

Ques. 49JEE Main 2026, 4 April (Evening Shift)

For a first order reaction A B arrayll t/min & [A]/M \ 0 & 0.6500 \ x & 0.0650 \ 20 & 0.00065 array x = min. (Nearest integer)

Ques. 50JEE Main 2026, 4 April (Evening Shift)

In sulphur estimation, 2.0 10-3 mol of an organic compound (X) (molar mass 76 g mol-1) gave 0.4813 g of barium sulphate (molar mass 233 g mol-1). The percentage of sulphur in the compound (X) is 10-1 % (Nearest integer)

Mathematics 25 questions

Ques. 51JEE Main 2026, 4 April (Evening Shift)

For the function f : [1, ) [1, ) defined by f(x)=(x-1)4+1, among the two statements : (I) The set S=\x [1, ) : f(x)=f-1(x)\ contains exactly two elements, and (II) The set S=\x [1, ) : f(x)=f-1(x+1)\ is an empty set,

  1. only (I) is TRUE
  2. only (II) is TRUE
  3. both (I) and (II) are TRUE
  4. neither (I) nor (II) is TRUE
Ques. 52JEE Main 2026, 4 April (Evening Shift)

Let S=\z C : z2+4z+16=0\. Then z S |z+ 3 i |2 is equal to :

  1. 42
  2. 23
  3. 27
  4. 38
Ques. 53JEE Main 2026, 4 April (Evening Shift)

If the system of equations : x+y+z=5 x+2y+3z=9 x+3y+ z= has infinitely many solutions, then the value of + is :

  1. 16
  2. 18
  3. 19
  4. 21
Ques. 54JEE Main 2026, 4 April (Evening Shift)

If =1 and =1+i 2, where i= -1 are two roots of the equation x3+ax2+bx+c=0, a, b, c R, then -11 (x3+ax2+bx+c )dx is equal to :

  1. -2
  2. -4
  3. -8
  4. -10
Ques. 55JEE Main 2026, 4 April (Evening Shift)

If the quadratic equation ( +2)x2-3 x+4 =0, -2, has two positive roots, then the number of possible integral values of is :

  1. 1
  2. 2
  3. 3
  4. 4
Ques. 56JEE Main 2026, 4 April (Evening Shift)

Let A= bmatrix1 & 2 & 7\ 4 & -2 & 8\ 3 & 8 & -7 bmatrix and (A- I)=0, where is a real number. If the largest possible value of is p, then the circle (x-p)2+(y-2p)2=320, intersects the co-ordinate axes at

  1. 1 point
  2. 2 points
  3. 3 points
  4. 4 points
Ques. 57JEE Main 2026, 4 April (Evening Shift)

Let = 14+ 18+ 116+ and = 13+ 19+ 127+ . Then the value of (0.2) 5( )+(0.04) 5( ) is equal to :

  1. 4
  2. 5
  3. 8
  4. 25
Ques. 58JEE Main 2026, 4 April (Evening Shift)

For 10 observations x1, x2, , x10, if i=110 (xi+2 )2=180 and i=110 (xi-1 )2=90, then their standard deviation is :

  1. 2
  2. 3
  3. 2 2
  4. 3
Ques. 59JEE Main 2026, 4 April (Evening Shift)

In the expansion of (9x- 13 x )18, x>0, if the term independent of x is (221)k, then k is equal to :

  1. 84
  2. 78
  3. 168
  4. 198
Ques. 60JEE Main 2026, 4 April (Evening Shift)

Let P(3 , 2 ), 0, be a point on the ellipse x29+ y24=1, Q be a point on the circle x2+y2-14x-14y+82=0 and R be a point on the line x+y=5 such that the centroid of the triangle PQR is (2+ , 3+ 23 ). Then the sum of the ordinates of all possible points R is :

  1. 6
  2. 2
  3. 4
  4. 8
Ques. 61JEE Main 2026, 4 April (Evening Shift)

Let H : x2a2- y2b2=1 be a hyperbola such that the distance between its foci is 6 and the distance between its directrices is 83. If the line x= intersects the hyperbola H at the points A and B such that the area of the triangle AOB is 4 15, where O is the origin, then 2 equals

  1. 12
  2. 16
  3. 24
  4. 25
Ques. 62JEE Main 2026, 4 April (Evening Shift)

0 x (16 ( x2 ) 3 ( x2 ) ) is equal to :

  1. 3 32
  2. 3 3
  3. 4 3
  4. 6 3
Ques. 63JEE Main 2026, 4 April (Evening Shift)

The shortest distance between the lines r= ( 13 i+2 j+ 83 k )+ (2 i-5 j+6 k ) and r= (- 23 i- 13 k )+ ( j- k ), , R, is :

  1. 5
  2. 3
  3. 2 3
  4. 15
Ques. 64JEE Main 2026, 4 April (Evening Shift)

If (2 +1, 2-3 , -12 ) is the image of ( , 2 , 1) in the line x-23= y-12= z1, then the possible value(s) of is (are)

  1. Only 3
  2. Only 3 and -1
  3. Only 3, 14 and -1
  4. Only 3 and 14
Ques. 65JEE Main 2026, 4 April (Evening Shift)

Let u and v be unit vectors inclined at an acute angle such that | u v |= 32. If A= u+ v+ ( u v ), then is equal to :

  1. 43 ( A u )- 23 ( A v )
  2. 23 ( A u )- 13 ( A v )
  3. 43 ( A u )+ 23 ( A v )
  4. ( A u )- 12 ( A v )
Ques. 66JEE Main 2026, 4 April (Evening Shift)

Let for some R, f : R R be a function satisfying f(x+y)=f(x)+2y2+y+ xy for all x, y R. If f(0)=-1 and f(1)=2, then the value of n=15 ( +f(n) ) is :

  1. 110
  2. 140
  3. 150
  4. 170
Ques. 67JEE Main 2026, 4 April (Evening Shift)

Let A=\(a, b, c) : a, b, c are non-negative integers and a+b+2c=22\. Then n(A) is equal to :

  1. 121
  2. 124
  3. 144
  4. 169
Ques. 68JEE Main 2026, 4 April (Evening Shift)

The area of the region bounded by the curves x+3y2=0 and x+4y2=1 is equal to :

  1. 13
  2. 23
  3. 43
  4. 53
Ques. 69JEE Main 2026, 4 April (Evening Shift)

Let y=y(x) be the solution of the differential equation : dydx+ ( 6x2+ (3x2+2x3+4 )e-2x (x3+2 ) (2+e-2x ) )y=2+e-2x, x (-1, 2), satisfying y(0)= 32. If y(1)= (2+e-2 ), then is equal to :

  1. 138
  2. 613
  3. 1213
  4. 1312
Ques. 70JEE Main 2026, 4 April (Evening Shift)

The integral 01 -1 (1+x+x2 )dx is equal to :

  1. 2 -12+ 12 e ( 54 )+ 2
  2. 2 -12+ 12 e ( 54 )- 2
  3. 2 -12- 12 e ( 54 )+ 2
  4. 2 -12- 12 e ( 54 )- 2
Ques. 71JEE Main 2026, 4 April (Evening Shift)

From a month of 31 days, 3 different dates are selected at random. If the probability that these dates are in an increasing A.P. is equal to ab, where a, b N and (a, b)=1, then a+b is equal to .

Ques. 72JEE Main 2026, 4 April (Evening Shift)

Let f(x)= casesex-1, & x<0\ x2-5x+6, & x 0 cases and g(x)=f(|x|)+|f(x)|. If the number of points where g is not continuous and is not differentiable are and respectively, then + is equal to .

Ques. 73JEE Main 2026, 4 April (Evening Shift)

Let A, B be points on the two half-lines x- 3 |y|= , >0 at a distance of from their point of intersection P. The line segment AB meets the angle bisector of the given half-lines at the point Q. If PQ= 92 and R is the radius of the circumcircle of PAB, then 2R is equal to .

Ques. 74JEE Main 2026, 4 April (Evening Shift)

Let A, B and C be the vertices of a variable right angled triangle inscribed in the parabola y2=16x. Let the vertex B containing the right angle be (4, 8) and the locus of the centroid of ABC be a conic C0. Then three times the length of latus rectum of C0 is .

Ques. 75JEE Main 2026, 4 April (Evening Shift)

Let f be a twice differentiable function such that f(x)= 0x (t-x) dt- 0x f(t) t dt, x (- 2, 2 ). Then f'' ( 6 )+12f' (- 6 )+f ( 6 ) is equal to .