Which waves in the electromagnetic spectrum are considered low energy waves?

sound waves and light waves
gamma rays and x–rays
microwaves and sound waves
radio waves and microwaves

Radio waves and microwaves

Explanation:

The energy of a wave is given by :

.........(1)

The wave having low frequency or high wavelength will have low energy. The wavelength of radio wave and microwave is maximum in the electromagnetic spectrum.

From equation (1) it is clear that the energy is wave is inversely proportional to the wavelength. If the wavelength is high, it will have low energy. So, the correct option is (d) "radio waves and microwaves".

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it