Aray of light bends upon entering a new medium. what is this phenomenon called?

Refraction

Explanation:

Refraction is a phenomenon which results when a ray of light enters from one medium to another medium. The speed of light in a medium slows down. It depends upon the optical density of the medium which is given by refractive index.

When a ray of light enters from rarer medium to denser medium, it bends towards the normal.

When a ray of light enters from denser medium to rarer medium, it bends away from the normal.

The laws of refraction are:

This is Snell's law. i is the angle of incidence, r is the angle of refraction, n₁ is the refractive index of medium 1 and n₂ is the refractive index of the medium 2.

u=13

v=30

s/t=u+1\2at

=13+431/2

=13+265.5

=278.5

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.