Question

If we add a few more drops of milk ,laser beam does not come out from the water.complete water in the jar starts shining in greenish colour.why

Answer 1

Answer:

If you shine a light straight down at water, most of the light will go into the water, and some will reflect. ... If a laser beam enters a glass bottle just right so that it leaves through a hole, the laser light will bounce around inside of the water stream coming out the hole without leaving the water.For example, the refractive index of water is 1.33, meaning that light travels 1.33 times faster in vacuum as it does in water. ... However, high intensity laser light can actually cause a medium's refractive index to vary as the light passes through it!

Explanation:

48.6-degrees

The Critical Angle Derivation

For the water-air boundary, the critical angle is 48.6-degrees.