A) Periscope
B) Telescope
C) Gyroscope
D) Stereoscope
Correct Answer: A
Solution :
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). A gyroscope is a device used for measuring or maintaining orientation and angular velocity. A stereoscope is a device for viewing a stereoscopic pair of separate images as a single three-dimensional image.You need to login to perform this action.
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