Question

if the light source is point size then what type of waveform is formed?​

Answer 1

For a point source, the waveform produced is SPHERICAL.

Detailed discussion:

• Let's imagine a point source placed at a reference origin.

• Now, as the waves radiate outwards from the source we can cleary imagine a sphere at a particular radius from the source at which all particles of the wave are in the same phase.

• So at, particular radii from the sources, as all particles will remain in the same face we will call that sphere as the waveform.

• So, spherical waveform is produced.

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• Similarly, for linear light sources, we get a cylindrical waveform.

• For light sources situated at infinity, we get a plane waveform.

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