Fill in the blank spaces with appropriate answers:
The angular dispersive `psi` = ________

Fill in the blank spaces with appropriate answers: The refractive index of _________ colour light is maximum and is minimum for ________ colour of light for any particular medium.

Fill in the blanks spaces with appropriate answers. Unlike currents……….

Fill in the blank spaces with appropriate answers: The S.I unit of permittivity 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: charge is considered to be a _______ quantity.

Fill in the blank spaces with appropriate answers: The wavelength of light ________ as it moves from denser to rarer medium.

Fill in the blank spaces with appropriate answers: On gaining electrons a body gets _______ charged.

Fill in the blank spaces with appropriate answers: On losing electrons a body gets________ charged.

Fill in the blank spaces with appropriate answer: The pole strength of a magnet is a ______ quantity.

Fill in the blank spaces with appropriate answers. The efficiency is high in case of _________ modulation. (amplitude frequency).