Optics Question 1144

Question: In Young’s double slit experiment the amplitudes of two sources are 3a and a respectively. The ratio of intensities of bright and dark fringes will be

[J & K CET 2004]

Options:

A) 3 : 1

B) 4 : 1

C) 2 : 1

D) 9 : 1

Show Answer

Answer:

Correct Answer: B

Solution:

ImaxImin=(a1+a2a1a2)2=(3a+a3aa)2=41



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