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Questions  

Two waves having the intensities in the ratio of 9 : 1 produce interference. The ratio of maximum to the minimum intensity, is equal to

a
2 : 1
b
4 : 1
c
9 : 1
d
10 : 8

detailed solution

Correct option is B

ImaxImin=I1I2+12I1I2−12=91+1291−12=41

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