A very thin transparent film of soap bubble (thickness → 0) is seen under reflection of white light. Then the colour of the film appear to be :

When a soap film on the water is seen in the daytime, it shows beautiful colours. This phenomenon is due to

Refraction of light, as it enters from one transparent medium to another, is due to

In order to avoid sunlight, which of the following colour combination for an umbrella is most appropriate?

When a light beam falls on a triangular glass prism, a band of colours is obtained. Which one of the following statements is correct in this regard ?

A glass prism splits white light into different colours. This phenomenon is called dispersion of light by prism. Which one of the following statements is correct ?