Question

1. A ray of light goes from a material of higher refractive index to one with a lower refractive index. Which way does it bend?

a) Away from the normal

b) Towards the normal

c) Goes straight (without bending)

2. A slab of glass is placed inside water. A ray of light goes from water into the glass. Which way will the ray of light bend when it enters the water.

a) Towards the normal

b) Away from the normal

c) Goes straight (without bending)

3. A scientific supply catalog offers a material that has a refractive index = 0.9. Could they have made an error in measuring this value

Yes or no?

4. When light enters water from air perpendicularly (i.e. along the normal), which of the following happen (may be more than one)

It bends away from the normal

It's speed gets smaller

Its wavelength increases

Its frequency decreases

Its wavelength decreases

Its frequency increases

Its speed increases

Answer 1

according to snells law, when a light ray passes from rarer medium to denser medium it bends to wards the normal

simillarly, when it passes from denser medium to rarer medium it moves away from the normal

1. Away from the normal

2. Towards the normal

3. its speed gets smaller and wavelength decreases (when light passing from one medium to another medium its frequency does not change ) speed is directly proportional to wavelength

4. yes. refractive index never less than one