Q1 of 9 Page 94

Place two mirrors parallel to each other and count the number of images formed in them.

Place two mirrors of same size parallel to each other. Now, take a pencil and hang it in between them so that it is at equal distance from the two mirrors. Now try to count the number of images thus formed. You will find that there are infinite number of images formed. Well it will be wrong to say infinite number of images as image is formed only once but it gets reflected infinite times.


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1

Answer the following questions.

Why are the two mirrors in a periscope placed parallel to each other?

 2

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

 3

Match the following.

 4

Fill in the blanks.

(a) The incident ray, the normal and the reflected ray are all in the same……………


(b) Reflection from a rough surface is called ……………reflection.


(c) In a periscope, we sec …………… reflection of an object.


(d) In a plane mirror, the image is…………… inverted.