Home
Class 10
PHYSICS
Assertion(A): The refractive index of a ...

Assertion(A): The refractive index of a prism depends only on the kind of glass of which it is made of and the colour of light.
Reason(R): The refractive index of a prism depends on the refracting angle of the prism and the angle ofminimum deviation.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true and R is not the correct explanation of A.

C

A is true but R is false.

D

Both A and R are false.

Text Solution

Verified by Experts

The correct Answer is:
(C) A is true , but 'R' is false
1) For a particular material and particular colour'n' is constant for a prism, because 'A' and 'D' are fixed to that prism and colout of light. It can be calculated bu using `n = (sin""(A+D)/2)/(sin"" (A)/(2))`
2) Even though we changes the angle of prism'n' doesn't change, because 'D' also changes to keep 'n' constant always.
3) Hence, A is true, but 'R' is false.
Promotional Banner

Topper's Solved these Questions

  • HUMAN EYE AND COLOURFUL WORLD

    VGS PUBLICATION-BRILLIANT|Exercise ACTIVITIES|4 Videos

  • HUMAN EYE AND COLOURFUL WORLD

    VGS PUBLICATION-BRILLIANT|Exercise THINK AND DISCUSS (1 MARK QUESTION)|1 Videos

  • HUMAN EYE AND COLOURFUL WORLD

    VGS PUBLICATION-BRILLIANT|Exercise MULTIPLE CHOICE QUESTIONS|6 Videos

  • GRAVITATION

    VGS PUBLICATION-BRILLIANT|Exercise ADDITIONAL PROBLEMS|4 Videos

  • KINETIC THEORY

    VGS PUBLICATION-BRILLIANT|Exercise Additional Problems|5 Videos

Similar Questions

Explore conceptually related problems

Write the formula for the refractive index of the prism.

The refiracting angle of a prism is A and the refractive index of the material of the prism is cot(A/2) . The angle of minimum deviation of the prism is .

Write the material required in finding the refractive index of a prism.