with reference to book i am posting some basic question for students. 1)two charged coducting sphere of radius r_(1 ) and r_2 are positvely charged separated at a distance d from each other. force of interaction is F which is correct answer a)F=(1/(4πε))((q_1 q_2 )/d^2 ) b)F>(1/(4πε))((q_1 q_2 )/d^2 ) c)F<(1/(4πε))((q_1 q_2 )/d^2 ) d)none of these 2)same question as 1 but one is +ve q_1 and another is −ve q_2 then which option is correct a)F=F_(columb) b)F>F_(columb) c)F<F_(columb) d)none of these pls give answer with explanatiin..