Home
Class 12
PHYSICS
Assertion : A priam is the source of col...

Assertion : A priam is the source of colours of light.
Reason : A prism has same refractive index for different colours of light.

A

If both, Assertion and Reason are true and the Reason is the correct explaination of the Assertion.

B

If both, Assertion and Reason are true but Reason is not a correct explaination of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both, Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D

Both, the Assertion and Reason are false as prism is not the source of colours. It only splits white light into its constituent colours. Different colours have different wavelengths. The prism has different refractive indices for different colours.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • OPTICS

    PRADEEP|Exercise Problems for practice|4 Videos
  • OPTICS

    PRADEEP|Exercise Comprehension 1|1 Videos
  • OPTICS

    PRADEEP|Exercise Value based questions|3 Videos
  • MAGNETIC EFFECT OF CURRENT AND MAGNETISM

    PRADEEP|Exercise Competition Focus (Multiple Choice Questions)|2 Videos

Similar Questions

Explore conceptually related problems

Why is the value of angle of deviation for a ray of light undergoing refraction through a glass prism for different colours of light ?

In a medium,different colours of light travel with

Knowledge Check

  • Assertion (A) : Diamond does bnot reflect light . Reason (R) : Diamond has low refractive index.

    A
    If both (A) and (R) are correct and (R) is correct explanation of (A)
    B
    If both (A) and (R) are correct and (R) is not correct explanation of (A)
    C
    If (A) is correct , but (R) is incorrect
    D
    If (A) is incorrect but (R) is correct
  • Statement-1 : When a white light passes through a prism it forms a spectrum of seven colours. Statement-2 : The refractive index for different colour of light is different for the material of prism.

    A
    Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-2
    B
    Statement-1 is true, statement-2 is true, statement-2 is NOT a correct explanation for statement-2
    C
    Statement-1 is true, statement-2 is false
    D
    Statement-1 is false, statement-2 is true
  • The Splitting of different colours of light in a prism is:

    A
    Reflection of light
    B
    Disperson of light
    C
    Diffraction of light
    D
    Refraction of light
  • Similar Questions

    Explore conceptually related problems

    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): The refractive index of a prism depends upon the refracting angle of the prism and the angle of minimum deviation.

    Assertion : A beam of white light when passed through a hollow prism cannot give spectrum. Reason : Because refractive index of air inside and outside the prism is same so no refraction and hence no deviation wll take place.

    The refractive index of the material of the prism for violet colour is 1.69 and that for red is 1.65. If the refractive index for mean colour is 1.66, the dispersive power of the material of the prism

    A thin prism produces an angular dispersion of 24. If the refracting angle of the prism is 3^(@) , and the refractive index of the material of the prism for red colour is 1.55 . What is the refractive index of its material for violet light ?

    We use flint glass prism to disperse polychromatic light because light of different colours