Wave Optics - Result Question 36

39. Which of the following phenomenon is not common to sound and light waves?

[1988]

(a) Interference

(b) Diffraction

(c) Coherence

(d) Polarisation

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Answer:

Correct Answer: 39. (d)

Solution:

  1. (d) Sound waves can not be polarised as they are longitudinal. Light waves can be polarised as they are transverse.

Polarisation of light is the restricting the vibration of light in a particular direction perpendicular to the direction of wave motion. Light is an electromagnetic wave and is transverse in nature.