A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure. The pencil of light coming out of the hole falls on a mirror.

At which point should the eye be placed, so that the hole can be seen?

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Solution

The correct option is A A
Following the laws of reflection, the eye should be placed at A because the hole can be seen only when the angle of incidence is equal to the angle of reflection.

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A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure. The pencil of light coming out of the hole falls on a mirror. At which point should the eye be placed, so that the hole can be seen?

The correct option is A AFollowing the laws of reflection, the eye should be placed at A because the hole can be seen only when the angle of incidence is equal to the angle of reflection.

A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure. The pencil of light coming out of the hole falls on a mirror.

At which point should the eye be placed, so that the hole can be seen?

The correct option is A A
Following the laws of reflection, the eye should be placed at A because the hole can be seen only when the angle of incidence is equal to the angle of reflection.