NEET Physics (general) MCQ Question
Which of the following combinations about work done in different scenarios are correct?
Work done by a man lifting a bucket is positive, while work done by gravitational force is negative.
Work done by friction on a body sliding down an inclined plane is positive.
Work done by an applied force on a body moving on a rough surface is negative.
Work done by resistive force of air on a pendulum is positive.
Correct Answer
Detailed Explanation
In the scenario described, the work done by the man lifting the bucket is positive as he applies force in the direction of motion, while the work done by gravitational force is negative because it acts opposite to the direction of lifting. The other statements reflect misconceptions about the nature of work done in those scenarios.
Found an issue with this question?