# In an interference experiment the ratio of amplitudes of coherent waves is a1/ a2 = 1/3 .

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In an interference experiment the ratio of amplitudes of coherent waves is a1/ a2 = 1/3 . The ratio of maximum and minimum intensities of fringes will be –

(1) 9

(2) 2

(3) 18

(4) 4

answered Sep 12 by (-4,766 points)

Correct option  (4)  4

Explanation:

a1 : a2 = 1 : 3

I1/I2 = (4/2)2 = 4 : 1

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