Fill in the blank spaces with appropriate answers:
If `mu_1 and mu_2` are refractive indices and `v_1 and v_2` are the velocity of light in two media then_______.

Fill in the blank spaces with appropriate answers: mu = A + B/lambda^2 is the ________ equation.

Fill in the blank spaces with appropriate answers: The equation realting refractive index of a medium with the wavelength of light is the _________ equation.

Fill in the blank spaces with appropriate answers: The refractive indices of water and glass are (4/3) and (3/2) respectively. If the speed of light in water is 2.25 xx 10^8 m//s) then the speed of light in glass is _______ m/sec.

Fill in the blank spaces with appropriate answer: The force between two magnetic poles is _________ and _________.

Fill in the blank spaces with appriapte answers. For ______ gate all the inputs are 1 and the output is zero.

Fill in the blank spaces with appropriate answers: The shape of wavefront from a point source of light is ______.

Fill in the blank spaces with appropriate answers: The Coulomb force acts _________ the line joining the two charges.

Fill in the blank spaces with appropriate answers: If apparent depth of water (mu = 4/3) in a jar is 12 cm then the real depth is _______ cm.

Fill in the blank spaces with appropriate answers: The Coulomb force between two charged bodies is a ________ range force.

Fill in the blank spaces with appropriate answers: The force between two charged bodies is governed by ___________ law.