Wave Optics: JEE Main Physics Previous Year Questions

295 previous year questions from Wave Optics. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $If a star emitting yellow light is accelerated towards earth, then to an observer on earth it will appear$
2. $A beam of light with intensity 10^{- 3} Nm^{- 2} and cross sectional area 20 cm^{2} is incident on a fully reflective surface at angle\dots$
3. $In a double slit experiment the distance between the slits is 0.1 cm and the screen is placed at 50 cm from the slits plane. When one slit is covered with a transparent s\dots$
4. $In Young's double slit experiment, the wavelength of light used is ' λ'. The intensity at a point is I where path difference is\dots$
5. $In a Young s double slit experiment, the ratio of the slit s width is 4 : 1 The ratio of the intensity of maxima to minima, close to the central fringe on the scre\dots$
6. $In a diffraction pattern due to a single slit of width , the first minimum is observed at an angle when light of wavelength is incide…$
7. $A diffraction pattern is obtained by using a beam of red light. If the red light is replaced by the blue light$
8. $For sustained interference fringes in double slit experiment, essential condition/s is/are (1) sources must be coherent. (2) the intensities of the two sources must be eq\dots$
9. $Two monochromatic light waves of amplitudes 3 A and 2 A interfering at a point have a phase difference of 60^{\circ} . The intensity at that point will be propor\dots$
10. $The fringe width for red colour as compared to that for violet colour is approximately$
11. $For the same angle of incidence, the angles of refraction of media ' ', ' ', ' ' and ' ' are ,…$
12. $On using red light (λ = 6600Å) in Young's double slit experiment, 60 fringes are observed in the field of view. If violet light\dots$
13. $If the polarizing angle of a piece of glass for green light is 54.74^{\circ}, then the angle of minimum deviation for an equilateral prism made of same glass is (Gi\dots$
14. $In Young's double slit experiment, red light of wavelength 6000Å is used and the n th bright fringe is obtained at a point P on the screen. Keeping the same setti\dots$
15. $In a Young's double slit experiment, a laser light of 560 nm produces an interference pattern with consecutive bright fringes' separation of 7.2 mm. Now another light is\dots$
16. $In Young's double - slit experiment if yellow light is replaced by blue light, the interference fringes become$
17. $What is the minimum thickness of a thin film required for constructive interference in the reflected light from it? Given, the refractive index of the film , wavel…$
18. $In an interference pattern of Young's double slit experiment, at a point we observe the 12^{th} order maximum for a monochromatic light source with wavelength\dots$
19. $In a double slit experiment, when a thin film of thickness having refractive index is introduced in front of one of the slits, the maximum at the centre of t…$
20. $Two slits are 1 mm apart and the screen is located 1 m away from the slits. A light of wavelength 500 nm is used. The width of each slit to obtain 10 maxima of the double\dots$
21. $A monochromatic light is incident on a single slit of width 0.014 mm . The angular position of the second bright line observed is 2.81^{\circ} . Then the wav\dots$
22. $Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion-(A): If Young's double slit experiment is performed i\dots$
23. $For what distance is ray optics is good approximation when the aperture is 4 mm and the wavelength of light is 400 nm ?$
24. $The width of one of the two slits in Young's double slit experiment is d while that of the other slit is x d . If the ratio of the maximum to the minimum intensit\dots$
25. $In Young's double slit experiment, the ratio of intensities of bright and dark bands is 16 which means$

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Wave Optics: JEE Main Physics Previous Year Questions

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