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

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

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

Retina of the eye is comparable to which of the following parts of a traditional camera?

Consider the following statements : Statement I : Light travels faster in air than in water. Statement II : Refractive index of air is greater than that of water. Select the correct answer using the…

Which one of the following colours is seen in the middle of a Rainbow?