A ray of light travelling in air enters obliquely into water. Does the light ray bends towards the normal or away from the normal? Why?

Explanation:

The refraction index of water (1.33) is higher than air (1), therefore the light ray will bend towards the normal.

where’s the list ? the question is incomplete

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .