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Figure showns four solid spheres, each w...

Figure showns four solid spheres, each with charge Q uniformly distributed through its volume. The figure also shows a point P for each sphere. All at the same distance from the centre of the sphere. Rank the spheres according to the magnitude of the electric field they produce at point P.

A

` I and II" tie " to III to IV`

B

`II to III to IV`

C

`III to II to I to IV`

D

all tie

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The correct Answer is:
a
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