MCQ
Two statements are given-one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion $(A):$ The kinetic energy of a charged particle moving in a uniform magnetic field does not change.
Reason $(R):$ In a uniform magnetic field no force acts on the charge particle.
Assertion $(A):$ The kinetic energy of a charged particle moving in a uniform magnetic field does not change.
Reason $(R):$ In a uniform magnetic field no force acts on the charge particle.
- ABoth $A$ and $R$ are true and $R$ is the correct explanation of $A.$
- BBoth $A$ and $R$ are true but $R$ is $\text{NOT}$ the correct explanation of $A.$
- ✓$A$ is true but $R$ is false.
- D$A$ is false and $R$ is also false.
