Refraction — Set 6

The ratio sin i / sin r for a given pair of media is called?

What is the unit of refractive index?

For normal viewing from air, refractive index of water can be written as?

An object is at real depth 24 cm and appears at 18 cm when seen from air. What is the refractive index of the medium?

For light going from medium 1 (denser) to medium 2 (rarer), the critical angle c satisfies?

Glass has refractive index 1.6 w.r.t air. What is the critical angle approximately?

Which statement is generally true?

A ray in water (n = 1.33) hits water-air boundary at 45 degrees. What is the refracted angle approximately (no total internal reflection)?

When light goes from air into glass, which statement is correct?

A glass slab of thickness 4 cm (n = 1.5) is used with incidence 30 degrees from air. What is the lateral shift approximately?