Periscope is a device related to:

tactual aid

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auditory aid

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visual aid

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sensory aid

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Solution

The correct option is C visual aid
Periscope is used in submarines to see objects on the surface of water and in different other cases where observations are to made beyond obstructions. Hence periscope comes under visual aid.

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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

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