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The intensity ratio of two waves is 9:1. If they produce interference, the ratio of maximum to minimum intensity will be
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a
4 : 1
b
2 : 1
c
9 : 1
d
3 : 2
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Correct option is A
Given I1:I2=9:1 ImaxImin=[I1+I2I1−I2]2 =[9+19−1]2 =[3+13−1]2 ∴ ImaxImin=41Similar Questions
A light of wavelength 5890 Å falls normally on a thin air film. The minimum thickness of the film such that the film appears dark in reflected light
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