First slide

Diffraction of light-Wave Optics

Question

Two polaroid are kept crossed to each other. Now one of them is rotated through an angle of $45^{0}$ . The percentage of incident light now transmitted through the system is

Moderate

A

15 %
B

25 %
C

50 %
D

60 %

Solution

$P o l a r i z e r a b s o r b e l e c t r i c f i e l d p e r p e n d i c u l a r t o i t s a x i s t h e r e f o r e i n t e n s i t y b e c o m e s I_{0} / 2 a f t e r p a s \sin g t h r o u g h p o l a r o i d s a n d a f t e r t h a t a s p e r M a l u s' l a w b e c o m e s I = (I_{0} / 2) \cos^{2} 45 ∴ I = I_{0} / 4 \Rightarrow 25 %$

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