Q73.Consider the two concentric conducting spherical bodies shown in figure. Here, the inner sphere has a radius of 3 cm and a net charge of +12 μC. The outer spherical shell has inner radius of 6 cm and outer radius of 8 cm and a net charge of −6 μC. Now consider the following statements and choose the correct option: A: The net charge on the inner surface of the outer shell is zero. B: The electric field at a radial distance r = 7 cm from the centre is zero. [Figure as shown in question paper]
Correct answer: Only the statement B is correct.