On a rainy day a small oil film on water shows brilliant colours. This is due to

On a rainy day, small oily films on water show brilliant colours. This is due to ________.

Colours thin films are due to

ZnO shows yellow colour on heating due to

ZnO shows yellow colour on heating due to

When exposed to sunlight, thin films of oil on water often exhibit brilliant colours due to the phenomenon of .....

When exposed to sunlight, thin films of oil on water often exhibit brilliant colours due to the phenomenon of

When exposed to sunlight, thin films of oil on water often exhibit brilliant colours due to the phenomenon of