Which of the following cannot be polarized?

Options

A. Ultrasonic waves
B. Radiowaves
C. Ultraviolet rays
D. X-rays

Answer

A

Explanation

All electromagnetic waves are the propagating transverse waves of the electric and magnetic field. All electromagnetic waves are polarised or polarizable in nature (Light is an electromagnetic wave and that.s why sunglasses are able to block part of it by allowing the light of only certain polarizations through them).
Sound waves are longitudinal mechanical waves. They propagate in a medium because of elasticity and inertia. Sound waves cannot be polarised.
Ultrasonic waves are high frequency sound waves. So, they cannot be polarised, other options are EM waves.