Question

Distence between h+ and cl id 127

Answer 1

Answer:

Correct option is

C

0.2V

Here 2a=1.38×10−10m,r=10×10−10mq=1.6×10−19C,   θ=0∘ 

As potential, 

V=4πε0r2P cosθ

    =4πε0r2q(2a)

    =(10×10−10)29×109×1.6×10−19×1.38×10−10 

V=0.2V