English

What is total internal reflection?

Advertisements
Advertisements

Questions

What is total internal reflection? 

Explain total internal reflection of light.

Explain
Short Answer
Advertisements

Solution

Total internal reflection is the phenomenon when a ray of light travelling in a denser medium is incident at the surface of a rarer medium such that the angle of incidence is greater than the critical angle for the pair of media, and the ray is totally reflected back into the denser medium.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Refraction of Light at Plane Surfaces - EXERCISE - 4 (D) [Page 100]

APPEARS IN

Selina Concise Physics [English] Class 10 ICSE
Chapter 4 Refraction of Light at Plane Surfaces
EXERCISE - 4 (D) | Q 9. (a) | Page 100
Lakhmir Singh Physics [English] Class 10 ICSE
Chapter 4 Refraction of Light at Plane Surfaces
Intex Question | Q 2. | Page 97

RELATED QUESTIONS

Which colour of light has a higher critical angle? Red light or green light.


State two conditions necessary for total internal reflection to occur.


Name the phenomenon which enables an empty test tube placed inside water shine like a mirror.

Define the terms critical angle and total internal reflection. State two conditions necessary for total internal reflection to occur. Write down the relation for the critical angle in terms of refractive index.

If a ray of light passes from medium I to medium II without any change of direction, what can be said about the refractive indices of these media (angle I is not 0)?


A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.

How is the angle of emergence ‘e’ related to the angle of incidence ‘i’?


How is the critical angle of a material related to its refractive index?


A ray of light is incident as a normal ray on the surface of separation of two different mediums. What is the value of the angle of incidence in this case?


Choose the correct option.

Consider the following phenomena/ applications: P) Mirage, Q) rainbow, R) Optical fibre and S) glittering of a diamond. Total internal reflection is involved in


A spherical marble, of refractive index 1.5 and curvature 1.5 cm, contains a tiny air bubble at its centre. Where will it appear when seen from outside?


Which of the following is not involved in formation of a rainbow?


Answer the following question.

What are the advantages of optical fibre communication over electronic communication?


Critical angle of light passing from glass to air is maximum for ____________.


For the same angle of incidence, the angle of refraction in four media A, B, C and D are 25°, 30°, 35° and 40° respectively. The speed of light is least in medium ______.


The angle of minimum deviation produced by a thin glass prism in air is 'δ'. If that prism is immersed in water, the angle of minimum deviation will be ______.

( aμg = refractive index of glass w.r.t, air aμw = refractive index of water w.r.t. air)


Total internal reflection can take place only if light is travelling from ______.


The twinkling effect of star light is due to ______.


The diagram below shows a fish in the tank and its image seen on the surface of the water.

Name the phenomenon responsible for the formation of this image.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×