What is the value of refractive index of a medium of polarising angle `60^@`?

What is the unit of refractive index?

What is the significance of refractive index?

A thin prism of 20^@ angle gives a deviation of 1^@ . What is the value of refractive index of the material of the prism?

A thin prism of 2^@ angle gives a deviation of 1^@ . What is the value of refractive index of the material of the prism?

A thin prism of 5^@ angle gives a deviation of 3.2^@ .What is the value of refractive index of teh material of the prism?

What is the speed of light in a dense medium of polarising angle 30^@ ?

Define refractive index of a medium w.r.t. another medium.

Which of the following is true about the value of refractive index of quartz glass?