Assertion $(A)$: The scalar product of force $\vec{F}$ and displacement $\vec{r}$ is equal to the work done.
Reason $(R)$: The work done is not a scalar quantity.
Reason $(R)$: The work done is not a scalar quantity.
- A$A$ and $R$ are both independently true and $R$ is the correct explanation for $A$.
- B$A$ and $R$ are both independently true and $R$ is not the correct explanation for $A$.
- C$A$ is true but $R$ is false.
- D$A$ is false but $R$ is true.
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