NEET Physics Work-Energy Theorem MCQ Question
Which of the following statements about the Work-Energy Theorem is correct?
The work done by a force at an angle of 90 degrees to the displacement is zero.
The gravitational force always does positive work on an object in motion.
Negative work can only occur when friction is involved in the motion.
Work and energy have different dimensions, but both are measured in joules.
Correct Answer
Detailed Explanation
According to the Work-Energy Theorem, when the angle between the force and displacement is 90 degrees, the work done is indeed zero since cos(90°) = 0. This is consistent with the principles outlined in the NCERT context.
Found an issue with this question?
Related Questions
More from Work-Energy Theorem
More from
Which of the following statements about power is correct?
Assertion (A): The dot product of two vectors is zero when the vectors are perpendicular. | Reason (R): The scalar product of two vectors is the produ...
Consider a diagram showing two vectors \( \vec{A} \) and \( \vec{B} \) at an angle \( \theta \) with each other. If the scalar product \( \vec{A} \cdo...