MCQ
A couple produces
- APurely linear motion
- ✓Purely rotational motion
- CLinear and rotational motion
- DNo motion
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$(1)$ The rate at which the particle strikes the piston is $v / L$
$(2)$ After each collision with the piston, the particle speed increases by $2 V$
$(3)$ The particle's kinetic energy increases by a factor of $4$ when the piston is moved inward from $L _0$ to $\frac{1}{2} L _0$
$(4)$ If the piston moves inward by $d L$, the particle speed increases by $2 v \frac{d L}{L}$

