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.

Correct Answer: D