Fill in the blanks
1.Periscope is based on the principle of successive -----------------from two plane mirrors.
2.The reflection taking place from the walls of a building is called --------------- reflection.

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Solution

1. Periscope is based on the principle of successive reflection from two plane mirrors.
2. The reflection taking place from the walls of a building is called irregular reflection.

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Q. The reflection taking place from the walls of a building is called:

Periscope works on the principle of multiple reflection. It consists of two or more mirror, used for the reflection. If the two mirrors are placed at an angle of $90^{\circ}$ , how many images of the object are formed between them?

Q. Name the instrument in which successive reflection of light takes place from two plane mirrors.

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.

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

A device which works on the reflection of light from two plane mirrors arranged parallel to one another is:

(a) electroscope

(b) kaleidoscope

(d) stethoscope

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Fill in the blanks1.Periscope is based on the principle of successive -----------------from two plane mirrors.2.The reflection taking place from the walls of a building is called --------------- reflection.

1. Periscope is based on the principle of successive reflection from two plane mirrors.2. The reflection taking place from the walls of a building is called irregular reflection.

Fill in the blanks
1.Periscope is based on the principle of successive -----------------from two plane mirrors.
2.The reflection taking place from the walls of a building is called --------------- reflection.

1. Periscope is based on the principle of successive reflection from two plane mirrors.
2. The reflection taking place from the walls of a building is called irregular reflection.