EASY
12th CBSE
IMPORTANT
Earn 100

Why are infra-red waves often called heat waves ? Explain.

Important Questions on Electromagnetic Waves

MEDIUM
12th CBSE
IMPORTANT
 What do you understand by the statement, “Electromagnetic waves transport momentum”?
EASY
12th CBSE
IMPORTANT
Identify the part of the electromagnetic spectrum used in i radar and ii eye surgery. Write their frequency range.
EASY
12th CBSE
IMPORTANT
Write an expression for the speed of light in a material medium of relative permittivity εr and relative magnetic permeability μr