How periscope and kaleidoscope used to get total internal reflection by arranging the mirrors??

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Similar questions

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

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. How many mirrors are used in a periscope?

Q. How many plane mirrors are used in a periscope ? How are they arranged relative to each other ?

Q. Optical instruments like the periscope and kaleidoscope use the property of ________

in order to create the final image or images.

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