The number of waves contained in unit length of the medium is called

The number of waves contained in a unit length of the medium is called .....

The number of waves in 7.5 cm length in vacuum is the same as the number of waves in 5 cm length of a medium . What is the refractive index of the medium ?

A monochromatic beam of light is travelling from medium A of refractive index n_(1) to a medium B of refractive index n_(2) . In the medium A , there are x number of waves in certain distance . In the medium B , there are y number of waves in the same distance . Then , refractive index of medium A with respect to medium B is ...

Phenomenon of bending of waves withoug a changed in medium is called

Phenomenon of bending of waves without a change in medium is called

The charge deposited per unit length of cylinder is called as

The fall of potential per unit length of wire is called……..

Tatal number of individuals per unit area of unit volume is called