1 nm is equal to

One nm is equal to :

Photosynthetic rate of red light (650 nm) is equal to:

The wave number which corresponds to electromagnetic radiations of 600 nm is equal to:

Find the velocity of an electron so that its momentum is equal to that of a photon of wavelength 650 nm.

What is the velocity of an electron so that its momentum is equal to the momentum of a photon associated with radiation of wave length 650 nm?

If a force of 500 dyne is applied on a body to bring about a displacement of 200 m, then the amount of energy spent is equal to (take 1 J = 1 Nm) _________.