Home
Class 12
PHYSICS
A glass prism with a refracting angle of...

A glass prism with a refracting angle of `60^(@)` has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find :
[Use : `sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7`]
The length of the spectrum if it is focussed on a screen by a lens of focal length 100 cm is :

A

`(10 pi)/(3) cm`

B

`(10 pi)/(3) m`

C

`(5 pi)/(3) cm`

D

`(5 pi)/(3) m`

Text Solution

Verified by Experts

The correct Answer is:
A
If `theta = 100 xx 6xx(pi)/(180)cm=(10 pi)/(3) cm`
Promotional Banner

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.17|20 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.18|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.15|20 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise High Level Problems (HIP)|21 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE|Exercise Exercise 3|27 Videos

Similar Questions

Explore conceptually related problems

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The angular width of the spectrum is :

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The angle of incidence at the prism is :

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white light is incident on one face at an angle of incident, which gives minimum deviation for red light. Find : (a) the angle of incidence (b) angular width of the spectrum (c) the length of the spectrum if it is focussed on a screen by lens focal length 100 cm . [Use: sin (49.7^(@)) =0.760, sin (31.6^(@))=0.520 , sin (28.4^(@))=0.475, sin (56^(@))=0.882 , pi =22//7 ]

A prism of angle 60^(@) is made of glass of refractive index 1.50 for red and 1.56 for violet. Find the angular separation of these rays when a narrow pencil of composite light is incident at minimum deviation.

" A prism of refractive angle 4^(@ and refractive index is "1.5" .What is the deviation in incident light "

The angle of prism is 60^(@) and its refractive index is 1.5. There will be no emergent light if the angle of incidence on the first face is

A prism has refracting angle of 60° and its material has refractive index 1.5 and 1.6 for red and violet light respectively. A parallel beam of white light is incident on one face of the prism such that the red light undergoes minimum deviation. Find the angle of incidence (i) and the angular width (theta) of the spectrum obtained. Given: sin (49^(@)) = 0.75^(@), sin(28^(@)) = 0.47, sin(32^(@)) = 0.53, sin(58^(@)) = 0.85