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Q: Efficiency of work is known as-
  • A. Energy
  • B. Velocity
  • C. Force
  • D. Speed
Correct Answer: Option A - Energy is called the ability to do work. Efficiency can be determined quantitatively by the ratio of energy transferred to useful form compared to the total energy supplied initially is called the efficiency.
A. Energy is called the ability to do work. Efficiency can be determined quantitatively by the ratio of energy transferred to useful form compared to the total energy supplied initially is called the efficiency.

Explanations:

Energy is called the ability to do work. Efficiency can be determined quantitatively by the ratio of energy transferred to useful form compared to the total energy supplied initially is called the efficiency.