Question

Which is the frequency range of gamma rays from the following?

(a) 1 × 10^18 to 3 × 10^22 Hz

(b) 3 × 10^-18 to 5 × 10^22 Hz

(c) 3 × 10^18 to 5 × 10^22 Hz

(d) 3 × 10^-18 to 5 × 10^-22 Hz

I have been asked this question in an international level competition.

This intriguing question originated from Electromagnetic Spectrum topic in section Electromagnetic Waves of Physics – Class 12

Answer 1

The correct answer is (c) 3 × 10^18 to 5 × 10^22 Hz

To explain: The frequency range of Gamma rays is 3 × 10^18 to 5 × 10^22 Hz. These rays have a wavelength of 6 × 10^-13 to 10^-10m. Gamma rays are produced in nuclear reactions and are also emitted by radioactive nuclei.