Q.

Two waves having intensity in the ratio 25 : 4 produce interference. The ratio of the maximum to the minimum intensity is

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a

5 : 2

b

7 : 3

c

49 : 9

d

9 : 49

answer is C.

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Detailed Solution

ImaxImin=I1I2+1I1I2−12=254+1254−12=499
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