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Express the Refractive Index μ of a Medium in Terms of the Velocity of Light. - Physics

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प्रश्न

Express the refractive index μ of a medium in terms of the velocity of light.

टिप्पणी लिखिए

उत्तर

The refractive index ‘μ’ of an optical medium is defined as the ratio between the velocity of light in vacuum divided by the velocity of light in the given optical medium. Thus,

`µ="Velocity of light in vacuum"/"Velocity of light in the given optical medium"`

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अध्याय 3: Refraction of Light - Short Answers

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आईसीएसई Physics [English] Class 10
अध्याय 3 Refraction of Light
Short Answers | Q 30

संबंधित प्रश्न

Light of a single colour is passed through a liquid having a piece of glass suspended in it. On changing the temperature of liquid, at a particular temperature the glass piece is not seen. When is the glass piece not seen?


Fill in the blanks to complete the following sentence 

The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be ………………. 

 


After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below: 

S. No.

i

i

e

I

30°

20°

31°

II

40°

25°

40°

III

50°

31°

49°

The correct observations are:

(A) I and II

(B) II and III

(C) I and III

(D) I, II and III


For which colour of white light, is the refractive index of a transparent medium the least?

For which colour of white light, is the refractive index of glass the most?

Name the factors on which the deviation produced by a prism depends.

In the fig. name the ray which represents the correct path of light while passing through a glass block.


Name the phenomenon responsible in the following case:

Apparent bending of a stick in water


In the diagram below, PQ is a ray of light incident on a rectangular glass block.

How are the angles ‘i’ and ‘e’ related to each other?


Two parallel rays of Red and Violet travelling through the air, meet the air-glass boundary as shown in the above figure. Will their paths inside the glass be parallel? Give a reason for your answer.


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