Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

A source of cm wave of 400 W produces $10^{20}$ photons per second. Identify the part of the electromagnetic spectrum to which these radiations belongs to:

Options:

microwave

X-rays

γ-rays

ultraviolet rays

Correct Answer:

ultraviolet rays

Explanation:

The correct answer is Option (4) → ultraviolet rays