Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about work done by forces is correct?
A
The work done by a spring force is always positive regardless of displacement.
B
The work done by a man lifting a bucket is positive, while the work done by gravitational force is negative.
C
Work done by friction on a body moving down an incline is always positive.
D
The work done by an applied force on a body moving on a rough surface is always zero.
Correct Answer
Option B
Detailed Explanation
According to the NCERT context, the work done by the spring force can be negative due to its opposing direction to displacement, and in the case of lifting a bucket, the applied work is positive while gravitational work is negative.
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