Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

The essential distinction between X - rays and γ - rays is that:

Options:

γ - rays have smaller wavelength than X - rays

γ - rays emanate from nucleus while X - rays emanate from outer part of the atom

γ - rays have greater ionising power than X - rays

γ - rays are more penetrating than X - rays

Correct Answer:

γ - rays emanate from nucleus while X - rays emanate from outer part of the atom

Explanation:

The wavelength of the γ - rays is shorter. However, the main distinguishing feature is the nature of emission.