For the same angle of incidence- the angles of refraction in media P- Q and R are 35- 25- 15- respectively- In which medium will the velocity of light be minimum-

Η = c/v = sin i/sin r ⇒ v is directly proportional to r Since r is minimum in medium R, therefore sin r is also minimum in medium R Hence, velocity is minimum ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard X

Physics

Multiple Glass Slabs with Different R.I

For the same ...

Question

For the same angle of incidence, the angles of refraction in media P, Q and R are $35^{\circ}$ , $25^{\circ}$ , $15^{\circ}$ respectively. In which medium will the velocity of light be minimum?

Open in App

Solution

$η$ = $\frac{c}{v}$ = $\frac{sin i}{sin r}$
$v \propto s i n r$

$\Rightarrow$ $v$ is directly proportional to $s i n r$ .
Angle of refraction $s i n r$ is minimum for media $R (i . e, 25)$ , so velocity will be minimum for media R.

Hence, velocity is minimum in medium $R .$

Suggest Corrections

Similar questions

Q. For the same value of angle of incidence, the angles of refraction in three media

A

B

and

C

are

15^{o}

25^{o}

and

35^{o}

respectively. In which medium would the velocity of light be minimum?

Q. For the same angle of incidence, the angles of refraction in media

^{'} P^{'},^{'} Q^{'},^{'} R^{'}

and

^{'} S^{'}

are

50^{\circ}, 40^{\circ}, 30^{\circ}, 20^{\circ}

respectively. The speed of light is minimum in medium

Q. For the same angle of incidence of 45° the refraction angle in 3 transparent media A, B and C are 25°, 30° and 45° respectively. In which medium is the speed of light minimum and in which medium maximum?

Join BYJU'S Learning Program

For the same angle of incidence, the angles of refraction in media P, Q and R are 35∘, 25∘, 15∘ respectively. In which medium will the velocity of light be minimum?

η = cv = sinisinrv∝ sinr ⇒ v is directly proportional to sinr .Angle of refraction sinr is minimum for media R(i.e,25) , so velocity will be minimum for media R. Hence, velocity is minimum in medium R.

For the same angle of incidence, the angles of refraction in media P, Q and R are $35^{\circ}$ , $25^{\circ}$ , $15^{\circ}$ respectively. In which medium will the velocity of light be minimum?

$η$ = $\frac{c}{v}$ = $\frac{sin i}{sin r}$
$v \propto s i n r$

$\Rightarrow$ $v$ is directly proportional to $s i n r$ .
Angle of refraction $s i n r$ is minimum for media $R (i . e, 25)$ , so velocity will be minimum for media R.

Hence, velocity is minimum in medium $R .$