Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

The curve drawn between velocity and frequency of a photon in vacuum will be

Options:

Straight line parallel to frequency axis

Straight line parallel to velocity axis

Straight line passing through origin and making

Hyperbola angle of 45° with frequency axis

Correct Answer:

Straight line parallel to frequency axis

Explanation:

The correct answer is Option 1: Straight line parallel to frequency axis

The speed of a photon in vacuum is constant (speed of light, c) and does not depend on frequency. Therefore, as frequency changes, velocity remains the same. This gives a horizontal line on a graph (parallel to the frequency axis).