MCQ
Thermal neutrons are those which
- AAre at very high temperature
- BMove with high velocities
- ✓Have kinetic energies similar to those of surrounding molecules
- DAre at rest
As a result of this the neutrons are in thermal equilibrium with the surrounding molecules of moderator.
These neutrons are called thermal neutrons.
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$(A)$ $\mathrm{E}=\frac{3}{4}\left(\frac{\mathrm{mv}^{2}}{\mathrm{qa}}\right)$
$(B)$ Rate of work done by the electric field at $\mathrm{P}$ is $\frac{3}{4}\left(\frac{\mathrm{mv}^{3}}{\mathrm{a}}\right)$
$(C)$ Rate of work done by both the fields at $\mathrm{Q}$ is zero
$(D)$ The difference between the magnitude of angular momentum of the particle at $\mathrm{P}$ and $Q$ is $2 mav$.