GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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False
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True
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Either A or B
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None of the above
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Detailed explanation-1: -The S.I. unit of energy is joule (J) while the CGS unit of energy is erg. The kinetic energy and potential energy are just forms of energy and share the same units as energy. Therefore, the given statement that SI unit of work and energy is joule is true.
Detailed explanation-2: -The SI unit for energy is the joule (J): 1 J=1 newton metre (N m). Another unit is the calorie (cal), which is defined as the heat required to raise the temperature of 1 g of pure water by 1°C at 1 atm pressure.
Detailed explanation-3: -The SI unit of energy is same as that of work, which is joule (J).
Detailed explanation-4: -Joule (J) is the SI unit of energy. So, the given statement is true.
Detailed explanation-5: -The joule (symbol J) is the SI unit of energy-a measure of the capacity to do work or generate heat. One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m).