A man 2 m tall stands 5 m in front of a large vertical plane mirror. Then the angle subtended at his eye by his image in the plane mirror is

Question

A man 2 m tall stands 5 m in front of a large vertical plane mirror. Then the angle subtended at his eye by his image in the plane mirror is (A) 0.4 radian (B) 0.2 radian (C) 0.2 degree (D) 0.4 degree

Tardigrade Admin · Accepted Answer

The image will be of the same height as the object or 2 m. The image is formed at a distance of 10 m from the person. Hence <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/7ca0025d2f90a23e521c352108d661c7-.png" /> Approximately, θ=(2 m/10 m)=0.2 rad.

Q. A man $2 m$ tall stands $5 m$ in front of a large vertical plane mirror. Then the angle subtended at his eye by his image in the plane mirror is

0.4 radian

0.2 radian

0.2 degree

0.4 degree

The image will be of the same height as the object or $2 m$ . The image is formed at a distance of $10 m$ from the person. Hence

Approximately, $θ = \frac{2 m}{10 m} = 0.2$ rad.

Q. A man 2m tall stands 5m in front of a large vertical plane mirror. Then the angle subtended at his eye by his image in the plane mirror is