Physics
Assertion (A) : When the displacement is zero, then the work is zero. So, if the work done is zero, then it necessarily means the displacement is zero.
Reason(R) : Work done is calculated by the relation š=š¹š ššš š
- A and R are true, and R is the reason for A.
- A and R are true, and R is not the reason for A.
- A is true, but R is false.
- A is false, but R is true.
Work, Energy & Power
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Answer
A is false, but R is true.
Explanation :
Work is given by so the reason is correct.
But zero work doesn't always mean zero displacement. For example, when force is perpendicular to displacement (like carrying a bag horizontally). Here, the angle between force and displacement is 90Ā° so work done work is still zero, even though displacement exists. Therefore, the reason is correct, but the assertion is not.
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