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Four point +ve charges of same magnitude...

Four point `+ve` charges of same magnitude`(Q)` are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to `z`-axis. If a `-ve` point charge is placed at a distance `z` away from the above frame `(z lt lt L)` then

A

`-ve` charge oscillates along the Z-axis

B

It moves away from the frame

C

It moves slowly towards the frame and stays in the plane of the frame

D

It passes through the frame only once

Text Solution

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The correct Answer is:
A
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