Question

Which electromagnetic wave has the highest frequency?

Answer 1

Radio waves have the lowest frequencies and longest wavelengths, while gamma waves have highest frequencies and shortest wavelengths. 

Answer 2

Gamma rays have the highest frequency.

What is an electromagnetic wave?

• An electromagnetic wave requires no medium for its propagation.
• It consists of a spectrum of different wavelengths.
• Different wavelengths of rays have different energies and different frequencies.
• Higher frequency rays have the highest energies.

What is gamma-ray?

• These are ionized radiations.
• Gamma radiations are obtained from the decay of the atomic nucleus.
• It has the highest frequency which is why it can penetrate through matter.
• It has the smallest wavelength and highest energy.
• The frequency of gamma rays is more than $10^{19}$ cycles per second and wavelength less than 100 picometers.