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Q.

Assertion (A): Force between two point charges at rest is not changed by the presence of a third point charge between them.

Reason (R): Force between two charges depends on the magnitude of the two charges and separation between them

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a

A is true but R is false

b

R is true but A is false

c

Both A and R are true and R is the correct explanation of A

d

Both A and R are true and R is not the correct explanation of A

answer is C.

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Detailed Solution

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We know that force between two charges q1and q2 separated by distance “d” is given by F=kq1q2d2
                                         
It does not depend upon any other charge present in between them. (through the net force changes but force between two charges does not change).
 

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