MCQ
The $x - t$ graph shown in figure represents


- AConstant velocity
- BVelocity of the body is continuously changing
- CInstantaneous velocity
- ✓The body travels with constant speed upto time ${t_1}$ and then stops

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$\theta:$ Scattering angle
$\mathrm{Y}:$ Number of scattered $\alpha$ -particles detected
(Plots are schematic and not to scale)