English

Draw a Diagram of a Prism and Label: (I) the Base, (Ii) the Refracting Surfaces, (Iii) the Refracting Edge, (Iv) the Refracting Angle in It.

Advertisements
Advertisements

Question

Draw a diagram of a prism and label:
(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.

Diagram
Advertisements

Solution

The figure shows a prism, in which BEFC is the refracting edge, and ∠BAC or ∠EDF is the refracting angle of the prism which has been marked by the symbol A.

shaalaa.com
  Is there an error in this question or solution?

RELATED QUESTIONS

When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.

  1. perpendicular
  2. parallel
  3. opposite
  4. concurrent

Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?


The refractive index of air with respect to glass is expressed as `""_g μ_a=sin i /sin r`.

  1. Write down a similar expression for aμg in terms of the angles i and r.
  2. If angle r = 90°, what is the corresponding angle i called?
  3. What is the physical significance of the angle i in part (b)? 

Select from the following the best set-up for tracing the path of a ray of light through a rectangular glass slab: 


(A) I

(B) II

(C) III

(D) IV


Define the absolute refractive index of a medium.

Define the term refractive index of a medium. What do you understand by the statement 'the refractive index of glass is 1.5 for white light'?


Fig. shows a ray of white light that passes through a prism and produces a spectrum.
(a) Name the phenomenon that is taking place.
(b) What colour would you see at X and Y?
(c) What radiation would you detect above X and below Y?


Which colour of light travels fastest in any medium except air?


In the diagram alongside a ray of light, PQ is incident normally on one face AB of an equilateral glass prism. What is the angle of incidence at the faces AB and AC?


A ray of light strikes the surface of a rectangular glass slab such that the angle of incidence in air is

  1. 0°,
  2. 45°.

In each case, draw a diagram to show the path taken by the ray as it passes through the glass slab and emerges from it.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×