NEET Physics Work-Energy Theorem MCQ Question
Which of the following statements about the Work-Energy Theorem is correct?
The work done on an object is always positive, regardless of the direction of the force.
The change in kinetic energy is equal to the work done by the net force acting on the object.
Negative work done on an object can result in an increase in its kinetic energy.
Work done by non-conservative forces contributes to the change in potential energy only.
Correct Answer
Detailed Explanation
The Work-Energy Theorem states that the change in kinetic energy of a particle is equal to the work done on it by the net force, which aligns with statement B. Statement A is incorrect as work can be negative, statement C misinterprets the effects of negative work, and statement D incorrectly attributes work done by non-conservative forces solely to potential energy change.
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