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in Physics by (20 points)

6. A parallel plates capacitor is made of square conductiong plates of side a and the 

separation between plates is d. The capacitor is connected with battery of emf V 

volt as shown in the figure. There is a dielectric slab of dimension a a d × × with 

dielectric constant k. At t = 0, dielectric slab is given velocity v0

 towards capacitor 

as shown in the figure. (Neglect the effect of gravity and electrostatic force acting 

on the dielectric when dielectric is outside of capacitor. Also ignore any frictional 

force acting on the dielectric during its motion) let the x be the length dielectric 

inside the capacitor at t t sec = . [ℓ 0 >> a

A) Motion of dielectric slab is periodic but not simple harmonic motion 

B) Motion of dielectric slab is simple harmonic motion 

C) At any time, the slope of graph of total energy verses x is twice the slope of graph of potential energy verses x 

D) The value of maximum energy stored in the system is ?????

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