Dispersion can take place for

Inspiration can take place only when:

Inspiration can take place only when:

Assertion (A): Sunlight reaches us without dispersion in the form of white light and not as its components. Reason (R): Dispersion takes place due to variation of refractive index for different wavelength but in vacuum the speed of light is independent of wavelength and hence vacuum is a non dispersive medium.

What are the different ways in which addition polymerisation can take place?