Q.

Consider two configurations in fig (i) and fig(ii)The work done by external agent in changing the configuration from fig(i) to fig(ii) is

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a

Zero

b

−6Gm2a1+12

c

−6Gm2a1−12

d

-6Gn2a2−12

answer is C.

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Detailed Solution

GPE=−Gm1m2r;W=GPE2−GPE1
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How to Join IIT after 10th
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