Refraction of Light — MCQ Practice

A ray of light is incident on a glass slab ($n = 1.5$) from air ($n = 1.0$) at an angle of $45^circ$. What is the angle of refraction inside the glass slab?

The critical angle for light going from medium A to medium B is $30^circ$. What is the refractive index of medium A with respect to medium B ($n_{A \to B}$)?

An object is placed at a real depth of $12,\text{cm}$ in a liquid. If its apparent depth is $9,\text{cm}$ when viewed normally from above, what is the refractive index of the liquid?

A light ray travels from a medium with refractive index $n_1$ to another medium with refractive index $n_2$. If the speed of light in the first medium is $v_1$ and in the second medium is $v_2$, which of the following relations is correct?

Which of the following phenomena is NOT explained by refraction of light?

A light ray is incident normally on a plane interface between two transparent media. What is the angle of refraction?