Assertion (A): Electromagnetic waves do carry energy and momentum, contrary to the statement.
Reason (R): The mass of a photon is indeed zero, but this does not mean photons do not carry momentum. Photons have momentum due to their energy E = hν, which is related to their frequency ν.
List-I EM-Wave | List-II Wavelength Range |
---|---|
(A) Infra-red | (III) 1 mm to 700 nm |
(B) Ultraviolet | (II) 400 nm to 1 nm |
(C) X-rays | (IV) 1 nm to \(10^{-3}\) nm |
(D) Gamma rays | (I) \(<10^{-3}\) nm |
The steam volatile compounds among the following are: