Question

What are two precautions to take with the plane mirror diagram to obtain reliable results

Answer 1

A ray of light incident normally on a surface is reflected back along the same path.

2)The incident ray,the reflected ray and the normal at the point of incidence ,lie on the same plane.

Answer 2

Precautions to take with the plane mirror diagram to obtain reliable results are:-

- The distant object should be clearly visible.

- The image on the wall should be well defined and sharp.

- While measuring the distance, the meter scale should be kept parallel to the ground.

- The meter scale must be correctly positioned between the wall and center of the concave mirror.

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