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Periscope

A periscope u...

Question

A periscope uses two plane mirrors as shown below.

Will an image formed by it be laterally invered? Justify. [2 marks]

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Solution

A plane mirror forms a laterally inverted image of an object. [1 mark]

SInce the periscope uses two plane mirrors, lateral inversion takes place twice and the final image is not laterally inverted w.r.t. the object. [1 mark]

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Similar questions

Give reasons.

(a) Letters appear laterally inverted in a plane mirror.

(b) Numerous images are seen in the ‘Palace of Mirrors’.

(c) The image formed in water is of the same size as the object.

(d) We do not see an image in transparent glass.

Q. An object shaped as

L

is placed between two parallel plane mirrors as shown. In the first seven closest images, how many laterally inverted images are formed?

why is the image seen by a periscope not laterally inverted?

Q. In a plane mirror why the images formed are laterally inverted?

Q. The image formed by a plane mirror is
virtual, erect, behind the mirror and smaller than the object.
virtual, erect, behind the mirror and the same size as the object.
virtual, inverted, behind the mirror and the same size as the object.
real, erect, behind the mirror and the same size as the object.
Periscope works on the principle of multiple reflections. It consists of two or more mirror, used for the reflection. If the two mirrors are placed at an angle of 90°, how many images of the object are formed between them?
one
Two
Three
Four

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