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Q.

Two isolated, charged conducting spheres of Radii R1  and R2 produce the same electric field near their surfaces.  The ratio of electric potentials on their surfaces is

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a

R1R2

b

R2R1

c

R12R22

d

R22R12

answer is A.

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Detailed Solution

E1=E2 KQ1R12=KQ2R22 Q1Q2=R12R22    …………………1 V1V2=Q1Q2R2R1      ………………2  Solving  equations 1 and 2  V1V2=R1R2
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