Due to which the surface charge density arises on the surface of a dielectric slab, when it is placed in a uniform electric field ?

Options

A. `1.5 m//s, 3 m//s`
B. `2m//s, 4 m//s`
C. `1 m//s, 3.5 m//s`
D. `1m //s, 3 m//s`

Answer

D

Explanation

Distance covered in 1 s,
`S = ((u + v )/( 2 )) t`
`= (( 0 + 6)/( 2 )) (1) = 3m `
If distance = 9m, then average speed,
`= (9m)/(3s) = 3 m//s`
If displacement = 3m, then average velocity,
`= (3m)/(3s) =1 m//s`