The definition of incidence is In geometric optics, the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal.
Answer:

Explanation:
We are given that



Current,I=

We have to find the maximum charge of the capacitor.
Charge on the capacitor,

....(1)

....(2)
Equation (2) divided by equation (1)




Hence, the maximum charge of the capacitor=
Answer:
position 3
Explanation:
in position 3 PE is least as height is least
so KE is most as energy is always conserved