Physics
State whether the following statement is 'true' or 'false'.
The deviation produced by a prism is independent of the angle of incidence and is same for all the colours of light.
Answer
The statement given above is False.
Reason — The deviation produced by a prism is not independent of the angle of incidence and the deviation is different for different colors of light due to the phenomenon of dispersion, where different wavelengths of light are refracted by different amounts, resulting in the separation of colors. So, the deviation produced by a prism is not the same for all colours of light
Related Questions
Assertion (A): If the angles of the base of a prism are equal, then in the position of minimum deviation, the refracted ray will pass parallely to the base of the prism.
Reason (R): For minimum deviation, angle of incidence is equal to the angle of emergence.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- assertion is false but reason is true.
- assertion is true but reason is false.
Complete the following sentence:
Angle of deviation is the angle which the …………… ray makes with the direction of …………… ray.
How does the angle of minimum deviation produced by a prism change with increase in (i) the wavelength of incident light and (ii) the refracting angle of the prism?
Write a relation for the angle of deviation (𝛿) for a ray of light passing through an equilateral prism in terms of angle of incidence (i1), angle of emergence (i2) and angle of prism (A).