MCQ
The essential distinction between $X-$ rays and $\gamma - $ rays is that
- A$\gamma - $ rays have smaller wavelength than $X-$ rays
- ✓$\gamma - $ rays emanate from nucleus while $X-$ rays emanate from outer part of the atom
- C$\gamma - $ rays have greater ionizing power than $X-$ rays
- D$\gamma - $ rays are more penetrating than $X-$ rays

