Q.
Two waves having the intensities in the ratio of 9;1 produce interference. The ratio of maximum to minimum intensity is equal to
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a
10 :8
b
9:1
c
4:1
d
2:1
answer is C.
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Detailed Solution
Intensity ratio = =I1I2=91Amplitude ratio +=a1a2=31Ifa1=3 units, then a2=1 unit. At maxima amax=a1+a2=4 At minima amin=a1−a2=2 ImaxImin=amax2amin2=164=41
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