Previous year MCQs

General science UPPSC 2007 GS-I
Question

Automatic wrist watches get energy from:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: From the various movements of our hands

Detailed Solution:

The correct answer is “From the various movements of our hands”.
Automatic wrist watches, also known as self-winding watches, are powered by the kinetic energy generated from the natural movements of the wearer's wrist. This energy is transferred to a rotor inside the watch, which winds the mainspring and powers the watch.

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