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SSC CGL 2022 PYQ — Question 46

SSC CGL - 01 Dec 2022 - Shift 1 • General Awareness • Q46

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What is the unit of work done?

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Correct answer: D

Explanation

The correct answer is Option 4. i.e. Joule.

The unit of work done is the joule (J). Work is defined as the product of force and displacement in the direction of the force, and 1 joule equals 1 newton-meter (N·m).

Other options:

  1. Watt (W) – Measures power, the rate of doing work (1 W = 1 J/s).

  2. Decibel (dB) – Measures sound intensity or relative power levels, not work.

  3. Ampere (A) – Measures electric current, not work.

While joule directly quantifies work or energy, the other units measure different physical quantities. Watt relates to work over time, decibel to sound, and ampere to electrical flow. Thus, joule is the correct answer for work done.