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What Do You Mean by the Statement 'The Critical Angle for Diamond is 240'?

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प्रश्न

What do you mean by the statement 'the critical angle for diamond is 240'?
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उत्तर

The critical angle for diamond is 24o; this indicates that diamond has high refractive index of 2.42. This low value of critical angle facilitates total internal reflection of each light ray entering the diamond at its multiple surfaces.
 
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अध्याय 2: Light - Graded Assignment 2.1 [पृष्ठ ११६]

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फ्रैंक Physics Part 2 [English] Class 10 ICSE
अध्याय 2 Light
Graded Assignment 2.1 | Q 29. | पृष्ठ ११६

संबंधित प्रश्न

The diagram below shows a point source P inside a water container. Four rays A, B, C, D starting from the source P, are shown up to the water surface.

  1. Show in the diagram the path of these rays after striking the water surface. The Critical Angle for the water-air surface is 48°.
  2. Name the phenomenon which the rays B and D exhibit.

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

State two factors which affect the critical angle for a given pair of media.

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’?


The diagram shows a point source P inside a water container. Three rays A, B, and C starting from P are shown up to the water surface. Show in the diagram the path of these rays after striking the water surface. The critical angle for the water-air pair is 48°.


Choose the correct option.

Angles of deviation for extreme colours are given for different prisms. Select the one having maximum dispersive power of its material.


Solve Numerical example.

From the given data set, determine angular dispersion by the prism and dispersive power of its material for extreme colours. nR = 1.62 nV = 1.66, δR = 3.1°


An endoscope uses optic fiber to transmit high resolution images of internal organs without loss of information. The principle of light that is used by the optic fiber is based on ______.


Total internal reflection is defined as the complete reflection of light back into an optically denser medium when:


When the angle of incidence for light travelling from a denser medium to a rarer medium is greater than the critical angle, the result is:


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