Interference and Diffraction Objective Question and Answer
Interference and Diffraction Questions and Answers | Online Quiz for Practice
Interference and Diffraction MCQ Questions for Practice
46. Interference pattern is observed in wedge-shaped film for monochromatic light. Now monochromatic light is replaced by white light. What will be the effect on interference pattern?
Correct Answer is: It will be a mixture of all colors
47. Light enters air from water. The angle of refraction will be
Correct Answer is: Less than the angle of incidence.
48. Light is
Correct Answer is: all of the above
49. Light travels fastest
Correct Answer is: In a vacuum
50. Newtons light illustrate the phenomenon of
Correct Answer is: Interference
51. Newtons light illustrate the phenomenon of
Correct Answer is: Interference
52. Newtons rings are formed because of interference between the light Reflected from
Correct Answer is: Lower surface of Plano-convex lens and upper surface of plane glass plate
53. Newtons rings experiment is performed and radius (or diameter) is calculated. Now Plano-convex lens is replaced with another Plano-convex lens of greater Radius of curvature. What will be effect on radius (or diameter)?
Correct Answer is: Radius (or diameter) will increase
54. Newtons rings experiment is performed with air gap between lens and plate. Now that gap is filled with water. What will be effect on radius (or diameter)?
Correct Answer is: Radius (or diameter) will decrease
55. On a rainy day, small oil films on water show brilliant colors. This is due to
Correct Answer is: interference
56. Optical fiber works on the
Correct Answer is: total internal reflection
57. Radio telescopes are better than optical telescopes because
Correct Answer is: All of the above
58. Rainbow is due to
Correct Answer is: refraction and reflection of sunlight by water droplets
59. Second glass plate in Michelson s Interferometer is known as
Correct Answer is: Compensating glass plate
60. significant diffraction of X ray can be obtained
