Question

Which of the following can be a wavelength of gamma ray?

(a) 2 x 10^-8 cm

(b) 3 x 10^-8 cm

(c) 4 x 10^-8 cm

(d) 5 x 10^-8 cm

I had been asked this question in an interview.

This key question is from Radiography topic in division Non Destructive Techniques of Casting-Forming-Welding II

Answer 1

Correct option is (b) 3 x 10^-8 cm

Best explanation: Gamma rays are supposedly known to have a shorter wavelength as compared to that of X-rays. The wavelength of gamma rays ranges from 0.005 x 10^-8 cm to 3 x 10^-8 cm.