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GK QUESTION#3099

Which of the following is the correct statement?

  1. AThe unit of power is joule/newton.
  2. BJoule is the unit of workCorrect answer
  3. CThe unit of energy is the watt.
  4. DJoule/ second is also a unit of energy.
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Answer

B. Joule is the unit of work

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Explanation

The joule is the SI unit of work and energy. One joule equals one newton metre, and one watt equals one joule per second. Joule per newton has the dimension of length, so the other choices do not give the stated quantities.

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