Question

Open in App

Solution

Verified by Toppr

$AB=cosα12dα =cosθxdθ $

Applying snell's law

$34 sina=1.sina$

$34 cosada=cosθdθ$

$⇒cos_{2}α9 =cos_{2}θx $

$1.sinθ=34 sinα$

$⇒sinθ=322 $

$⇒x=18×91 =2$

$d=2×sin(θ−α)$

$=4×2 1 (322 −31 )=38−22 $

$=1.73≈2$

Was this answer helpful?

0

0