Question
Physics Question on Nuclei
The essential distinction between X-rays and γ− rays is that
A
γ− rays have smaller wavelength than X-rays
B
γ− rays emanate from nucleus while X-rays emanate from outer part of the atom
C
γ− rays have greater ionizing power than X-rays
D
γ− rays are more penetrating than X-rays
Answer
γ− rays emanate from nucleus while X-rays emanate from outer part of the atom
Explanation
Solution
The wavelength of the γ− rays is shorter. However the main distinguishing feature is the nature of emission.