First slide

Introduction-Wave optics

Question

Figure shows plane waves refracted from air to water using Huygens' principle and a,b,c,d,e are lengths as shown in the diagram. The refractive index of water w.r.t air is the ratio

Moderate

A

a/e
B

b/e
C

b/d
D

d/b

Solution

$l e t θ_{1} a n d θ_{2} a r e t h e a n g l e s a s s h o w n i n d i g . F r o m t h e S n e l l s l a w, 1 \sin (90 - θ_{1}) = μ \sin θ_{2} \Rightarrow 1 \frac{b}{c} = μ \times \frac{d}{c} ∴ μ = \frac{b}{d}$

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