Test: Interference Of Light


10 Questions MCQ Test Physics Class 12 | Test: Interference Of Light


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This mock test of Test: Interference Of Light for Class 12 helps you for every Class 12 entrance exam. This contains 10 Multiple Choice Questions for Class 12 Test: Interference Of Light (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Interference Of Light quiz give you a good mix of easy questions and tough questions. Class 12 students definitely take this Test: Interference Of Light exercise for a better result in the exam. You can find other Test: Interference Of Light extra questions, long questions & short questions for Class 12 on EduRev as well by searching above.
QUESTION: 1

In an interference experiment monochromatic light is replaced by white light, we will see:​

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QUESTION: 2

If the Young’s apparatus is immersed in water, the effect on fringe width will​

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QUESTION: 3

Two coherent sources produce a dark fringe when phase difference between the interfering waves is(n integer)​

Solution:

Dark fringes will be produced when there are destructive interference. The condition for that is the two waves should have a phase difference of an odd integral multiple of π.

QUESTION: 4

In Young’s double slit experiment, the distance between the two slits is halved and the distance of the screen from the slit is doubled. The fringe width will be

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QUESTION: 5

Young’s double slit experiment is carried out using two bulbs instead of using two slits and one source. Then​

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QUESTION: 6

In the Young’s double slit experiment, the distance of p th dark fringe from the central maximum is:

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QUESTION: 7

In Young’s double slit experiment, one slit is covered. The observed effect will be

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QUESTION: 8

When viewed in white light, a soap bubble shows colours because of

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QUESTION: 9

Two coherent sources of intensity ratio 100:1 interfere. The ratio of interference at the maxima and minima​

Solution:

We know that for two coherent sources, the intensity of their maxima is (Imax +  Imin)2 and that of its minima is (Imax +  Imin)2 . Thus we get the intensity of maxima = 121k and that of minima = 9k, for some constant k as (Imax = 100k and  Imin = k.
Thus we get the ratio as 121:81.

QUESTION: 10

Which of the following in conserved when light waves interfere?

Solution:

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