Refraction — Set 3

A ray goes from air to glass (n = 1.5) with incidence 30 degrees. What is the angle of refraction approximately?

What is the critical angle for glass (n = 1.5) to air approximately?

A ray in water (n = 1.33) hits the surface to air at 30 degrees to the normal. What is the refracted angle approximately?

A pond is 3.0 m deep and refractive index of water is 1.5. What is its apparent depth when viewed from air near normal?

Lens maker ideas use refractive index mainly as?

Dispersion by a prism happens mainly because refractive index?

In ordinary glass, which color generally has the highest refractive index?

Relative refractive index of medium 2 with respect to medium 1 can be written as?

When light enters a medium of higher refractive index, its speed?

In normal dispersion, refractive index generally increases when wavelength?