Wave Optics

NEET 2013 (Karnataka)MCQEasyNot asked in last 5 yrs+4−1

Ques. 1NEET 2013 (Karnataka)

A parallel beam of light of wavelength is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam. At the second minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of slit is

Answer

(3) 4

Solution

For the nth minimum of single-slit diffraction: a = n

Second minimum (n = 2): path difference between the edge rays = 2

Phase difference = 2 2 = 4

Answer: (3)

Keep practising — Wave Optics

Ques. 2AIPMT 2005

The angular resolution of a 10 cm diameter telescope at a wavelength of 5000 A is of the order of

106 rad
10-2 rad
10-4 rad
10-6 rad.

Ques. 3AIPMT 2004

A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wavelength of light is 5000 A, is of the order of

0.5 m
5 m
5 mm
5 cm

Ques. 4AIPMT 2002

Diameter of human eye lens is 2 mm. What will be the minimum distance between two points to resolve them, which are situated at a distance of 50 metre from the eye? The wavelength of light is 5000 Å.

2.32 m
4.28 mm
1.25 cm
12.48 cm

All Wave Optics PYQs →

PDFDownload Wave Optics PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇

All NEET Physics chapters

Class 11Units and Measurements Motion in a Straight Line Motion in a Plane Laws of Motion Work, Energy and Power System of Particles and Rotational Motion Gravitation Mechanical Properties of Solids Mechanical Properties of Fluids Thermal Properties of Matter Thermodynamics (Physics)Kinetic Theory Oscillations Waves

Class 12Electric Charges and Fields Electrostatic Potential and Capacitance Current Electricity Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current Electromagnetic Waves Ray Optics and Optical Instruments Wave Optics Dual Nature of Radiation and Matter Atoms Nuclei Semiconductor Electronics Experimental Skills (Physics)