Target Exam

CUET

Subject

Physics

Chapter

Wave Optics

Question:

You are sitting in a parked car and you notice a boy running towards the car in the side view mirror of the car. If the boy is running at a constant speed towards you, which option according to you is correct

Options:

The boy will appear to be running at a constant speed towards you

The boy will appear to be stationary

The boy will appear to be running towards the car and his speed will appear to be continuously increasing

The boy will appear to be running towards the car and his speed will appear to be continuously decreasing

Correct Answer:

The boy will appear to be running towards the car and his speed will appear to be continuously increasing

Explanation:

The correct answer is Option (3) → The boy will appear to be running towards the car and his speed will appear to be continuously increasing

In a convex side-view mirror, objects appear closer and their apparent motion is not uniform.

As the boy runs towards the car at constant speed, the image distance in the convex mirror changes non-linearly. The image of the boy moves faster in the mirror as he comes closer.

Correct option:

The boy will appear to be running towards the car and his speed will appear to be continuously increasing