First slide

Young's double slit Experiment

Question

Two coherent sources of intensities I₁ and I₂ produce an interference pattern. The maximum intensity in the interference pattern will be

Easy

A

$I_{1} + I_{2}$
B

$I_{1}^{2} + I_{2}^{2}$
C

${(I_{1} + I_{2})}^{2}$
D

${(\sqrt{I_{1}} + \sqrt{I_{2}})}^{2}$

Solution

Resultant intensity $I_{R} = I_{1} + I_{2} + 2 \sqrt{I_{1} I_{2}} \cos ϕ$
For maximum $I_{R}, ϕ = 0^{\circ}$
$\Rightarrow I_{R} = I_{1} + I_{2} + 2 \sqrt{I_{1} I_{2}} = {(\sqrt{I_{1}} + \sqrt{I_{2}})}^{2}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App