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

What is the shape of the wavefront on Earth for sunlight?

What is wavefront ? What is the shape of the wavefront at a point far away from the source of light?

What is the shape of the wave front in each of the following cases : the portion of the wavelength of light from a distant star intercepted by the Earth

What is ray of light w.r.t. wavefront ?

What is the shape of the wavefront in each of the following cases : light diverging from a point source

What is the geometrical shape of wavefront of light emerging out of a convex lens when a point source is placed at its focus ?

Define wavefront of light .

A cylindrical wavefront spreads form a line source which is comparable to a long and narrow slit. The wavefront is at a distance d form source then th amplitude of wave is proportional to

The wavefront due to a source situated at infinity is

in LED, intensity of emitted light