List of top Physics Questions on Refraction of Light asked in MHT CET

A light ray is passing from air (refractive index \( \mu_1 = 1.0 \)) into water (refractive index \( \mu_2 = 1.33 \)). If the angle of incidence in air is 30°, what is the angle of refraction in water?
The refraction of light ray takes place from air to water, water to glass and again glass to air. The ray emerges parallel to incident ray. The correct relation is [\(n_a, n_w, n_g\) represent refractive indices of air, water and glass respectively]
Glass has refractive index $\mu$ with respect to air and the critical angle for a ray of light going from glass to air is $\theta$. If a ray of light is incident from air on the glass with angle of incidence $\theta$, corresponding angle of refraction is