Assertion (A) : The soap film in sun light is colourful
Reason (R ) : Thin films produce interference of light

A : The soap film in sun light is colourful. R : Thin films produce interference of light.

Colours of soap film in sun light is due to

YDSE-2 & thin film interference

Thin film interference

Colours thin films are due to

Assertion (A) : When ordinary light is incident on thin oil film on the surface of water, different colours are seen. Reason (R) : White light is composed of seven different colours.

Assertion (A) : When ordinary light is incident on thin oil film on the surface of water, different colours are seen. Reason (R) : White light is composed of seven different colours.

Interference By a thin film