Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A tachometer is a device to measure
Text Solution
Verified by ExpertsThe correct answer is:
B
A tachometer is an instrument used to measure the speed of rotation of an object, typically expressed in revolutions per minute (RPM).
Thus, the correct answer is Option B: Speed of rotation.
- Step 1: Understand the function of the tachometer: It measures rotational speed.
- Step 2: Contrast with other options: Gravitational pull and surface tension involve distinct physical properties not related to rotation. Tension in a spring is a force measurement, not rotational speed.
Thus, the correct answer is Option B: Speed of rotation.
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