The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appearance of the Sun is

Rainbow is produced when sunlight falls on drops of rain. which of the following physical phenomena are responsible for this?

Which one of the following phenomenon is used in optical fibres?

The formation of glittering colours in thin foam of soap is the result of which of the following phenomenon –

The red colour of the Sun at sunset and sunrise is due to –

Which of the following is the reason behind the faster travel of information in a fibre optic cable than copper wire ?