NEET-XII-Physics
17: Light Waves
- #13When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of
(a) disperson of light
(b) reflection of light
(c) polarization of light
(d) interference of lightdigAnsr: dAns : (d) interference of light
Interference effect is produced by a thin film ( coating of a thin layer of a translucent material on a medium of different refractive index which allows light to pass through it))In the present case, oil floating on water forms a thin film on the surface of water, leading to the display of beautiful colours in daylight because of the interference of sunlight.