General Science - Physics MCQs


Q.  One joule of work is said to be done when__:

a. a force of 1 dyne causes a displacement of 1 cm.
b. a force of 1 dyne causes a displacement of 1 m.
c. a force of 1 N causes a displacement of 1 cm.
d. a force of 1 N causes a displacement of 1 m.


ANSWER: See Answer
 
The joule is the unit of energy in the International System of Units. It is equal to the work done on an object when a force of one Newton acts on that object in the direction of the force’s motion through a distance of one meter. One joule of work is said to be done when a force of 1 N causes a displacement of 1 m.
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