Home
Class 12
PHYSICS
A ray of light passes through an equilat...

A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these angles is equal to 3/4 of the angle of the prism. The angle of deviation is

A

`45^(@)`

B

`39^(@)`

C

`20^(@)`

D

`30^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Given, `i=e=3/4A=3/4xx60^(@)=45^(@)`
In the position of minimum deviation,
`2i=A+delta_(m)`
or `delta_(m)=2i-A`
`2xx45^(@)-60=30^(@)`
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    DC PANDEY|Exercise Checkpoint 9.6|20 Videos

  • RAY OPTICS

    DC PANDEY|Exercise Checkpoint 9.7|10 Videos

  • RAY OPTICS

    DC PANDEY|Exercise Checkpoint 9.4|20 Videos

  • NUCLEI

    DC PANDEY|Exercise C MADICAL ENTRANCES GALLERY|46 Videos

  • REFLECTION OF LIGHT

    DC PANDEY|Exercise Subjective|9 Videos

Similar Questions

Explore conceptually related problems

A ray of light passes through an equilateral prism in such a way that the angle of incidence is equal to the angle of emergence and each of these angles is 3//4 th the angle of the prism. Determine the (i) angle of deviation and (ii) the refractive index of the prism.

A ray of light passes through an equilateral prism (refractive index 1.5 ) such that angle of incidence is equal to angle of emergence and the latter is equal to 3//4 th of the angle of prism. Calculate the angle of deviation.

A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and latter is equal to (3//4)^(th) the angle of prism. The angle of deviation is

(a) If the refracting angle of a prism is 60^@ and the minimum deviation is 30^@ , then find the angle of incidence. (b) A ray of light passes through an equilateral prism such that the angle of emergence is equal to the angle of incidence and each is equal to 3//4^(th) of the angle of prism. Find the angle of deviation. (c) The refracting of a prism is A and the refractive index of the material of the prism is cotA//2 . Find the angle of deviation. (d) The angle of a prism is 60^@ . What is the angle of incidence for minimum deviation? The refractive index of the material of the prism is sqrt2 .

A ray of light passes through the equilateral prism such that angle of incidence is equal to the angle of emergence if the angle of incidence is 45^(@) . The angle of deviation will be