Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at plane surfaceMedium2 minQB

PhysicsMediumsingle choice

A man holds a rectangular card in front of and parallel to a plane mirror. In order for him to see the entire image of the card, the least mirror area needed is:

Options:

Answer:

Solution:

Rays from the card edges to the eye form similar triangles.

The card and its image are the same size and the eye is midway between the card and the image.

So each mirror dimension needed is half that of the card.

Area $= \frac{1}{2} \times \frac{1}{2} = \frac{1}{4}$ of the card.

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at plane surface

⏱ 2mℹ️ Source: QB

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