What are non-mechanical waves?

Question

Options:

A . Waves that travel in such a way that wave direction is perpendicular to motion of particles

B . Waves that travel in such a way that wave direction is same as motion of particle

C . Those which do not require material medium to travel

D . Those that require material medium to travel.

Answer: Option C
:
C
Non-Mechanical waves are waves that do not require a material medium to travel. . For example light from starstravels through space to earth.

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