Previous year questions with solutions · 2024 – 2026
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 4 | 19 | 0.21 | 0.84% ▼ 33.3% vs last year |
| 2025 | 6 | 19 | 0.32 | 1.26% ▲ 26.3% vs last year |
| 2024 | 6 | 20 | 0.3 | 1.00% |
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]
A short bar magnet placed with its axis at 30 with an external field of 800 Gauss, experiences a torque of 0.016 N m. The work done in moving it from most stable to most unstable position is 10-3 J. The value of is .
A straight magnetic strip has a magnetic moment of 44 Am2. If the strip is bent in a semicircular shape, its magnetic moment will be Am2. (given = 227)
The coercivity of a magnet is 5 103 A/m. The amount of current required to be passed in a solenoid of length 30 cm and the number of turns 150, so that the magnet gets demagnetised when inside the solenoid is A.
A circular coil having 200 turns, 2.5 10-4 m2 area and carrying 100 current is placed in a uniform magnetic field of 1 T. Initially the magnetic dipole moment ( M) was directed along B. Amount of work, required to rotate the coil through 90 from its initial orientation such that M becomes perpendicular to B, is J.
The magnetic potential due to a magnetic dipole at a point on its axis situated at a distance of 20 cm from its center is 1.5 10-5 T m. The magnetic moment of the dipole is A m2. (Given : 04 =10-7 T m A-1)