First slide

Introduction-Wave optics

Question

The ratio of intensities of two waves are given by 4 : 1. The ratio of the amplitudes of the two waves is

Easy

A

2 : 1
B

1 : 2
C

4 : 1
D

1 : 4

Solution

$I \propto a^{2} \Rightarrow \frac{a_{1}}{a_{2}} = {(\frac{4}{1})}^{1 / 2} = \frac{2}{1}$

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