Single Choice

Given a point source of light, which of the following can produce a parallel beam of light

AConvex mirror
BConcave mirror
Correct Answer
CConcave lens
DTwo plane mirrors inclined at an angle of $$90^{0}$$

Solution

Object should be placed on focus of concave mirror.

SIMILAR QUESTIONS

Optics

The size of the image, if an object of $$2.5$$m height is placed at a distance of $$10$$ cm from a concave mirror is: (Take radius of curvature of concave mirror $$=30$$ cm)

Optics

The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?

Optics

If an object is placed $$10\ cm$$ infront of a concave mirror of focal length $$20\ cm,$$ the image will be

Optics

Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object ?

Optics

A man standing in front of a special mirror finds his image having a very small head, a fat body and legs of normal size. What is the shape of: (a) top part of the mirror? (b) middle part of the mirror? (c) bottom part of the mirror? Give reasons for your choice.

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