Answer:
C.
Explanation:
Let initial charges on both spheres be,
When the sphere C is touched by A, the final charges on both will be,
#Now, when C is touched by B, the final charges on both of them will be:
Now the force between A and B is calculated as:
Hence the electrostatic force becomes 3F/8
Explanation:
According to Rydberg's formula, the wavelength of the balmer series is given by:
R is Rydberg constant for an especific hydrogen-like atom, we may calculate R for hydrogen and deuterium atoms from:
Here, is the "general" Rydberg constant,
is electron's mass and M is the mass of the atom nucleus
For hydrogen, we have, :
Now, we calculate the wavelength for hydrogen:
For deuterium, we have :