First slide

Young's double slit Experiment

Question

If one of the two slits of Young's double slit experiment is halved, the

Easy

A

Fringes disappear
B

Dark fringes become darker and bright fringes become brighter
C

Dark fringes become brighter and bright fringes become darker
D

Both bright and dark fringes become darker

Solution

$I_{\max} = {(\sqrt{I_{1}} \pm \sqrt{I_{2}})}^{2} if I_{1} = I_{2} = I I_{\max} = 4 I I_{\min} = {({\sqrt{I}}_{1} - \sqrt{I_{2}})}^{2} if I_{1} = I_{2} = I I_{\min} = 0 If I_{2} < I_{1} I_{\max} decreases but I_{\min} increases$

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