The energy emitted by a source is in the form of

The energy radiated from a source is in the form of

The shape of wave front emitted by a light source in the form of a narrow slit is

What is the shape of a wavefront emitted by a light source in the form of a narrow slit ?

What is the geomatrical shape of wavefront emitted from a source in the form of narrow slit ?

A monochromatic source emits light of wavelength 550 nm is emitted by a source . Find the number of photons emitted by the source in 90 seconds if power of source is 60 W.

The photons emitted by a source of light do not all have the same energy. Is the source monochromatic? Give your reasoning.

The radiant energy is emitted or absorbed continuously in the form of photons.