

so, charge decreases
thus voltage $=\frac{\mathrm{Q}}{\mathrm{C}}$ also decreases and $\mathrm{v}=\frac{-\mathrm{L} \mathrm{di}}{\mathrm{dt}}$
so $\frac{\mathrm{di}}{\mathrm{dt}}$ increases
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$(A)$ The ray gets totally internally reflected at face $CD$
$(B)$ The ray comes out through face $\mathrm{AD}$
$(C)$ The angle between the incident ray and the emergent ray is $90^{\circ}$
$(D)$ The angle between the incident ray and the emergent ray is $120^{\circ}$
$A.$ The electron will experience magnetic force along the axis of the solenoid.
$B.$ The electron will not experience magnetic force.
$C.$ The electron will continue to move along the axis of the solenoid.
$D.$ The electron will be accelerated along the axis of the solenoid.
$E.$ The electron will follow parabolic path-inside the solenoid.
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