Given below are two statements: one is labelled Assertion A and the other is labelled Reason R.

Question

G1 Physics · Accepted Answer

Optical communication uses infrared/visible frequencies, which are much higher than microwave frequencies. Since λ = c/f, higher frequency means shorter wavelength. Therefore Assertion A is false. Photon energy E = hf. Infrared has higher frequency than microwaves, so it is more energetic. Reason R is true. Hence option A follows.