Assertion : Electromagnetic waves interact with matter and set up oscillations
Reason : Interaction is independent of the wavelength of the electromagnetic wave.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

C

Explanation

Electromagnetic waves interact with matter via their electric and magnetic field which set in oscillation of charges present in all matter. The detailed interaction and so the mechanism of absorption, scattering, etc. depend on the wavelength of the electromagnetic wave, and the nature of the atoms and molecules in the medium.