Two electric dipoles, A, B with respective dipole moments = −4qa and =−2qa placed on the xaxis with a separation R, as shown in the figure The distance from A at which both of them produce the same potential is 

(a) 

(b) 

(c) 

(d) 

Two electric dipoles, A, B with respective dipole moments = −4qa and =−2qa placed on the xaxis with a separation R, as shown in the figure The distance from A at which both of them produce the same potential is 

(a) 

(b) 

(c) 

(d) 
