Refraction & Lenses

What is refraction?

• The bouncing of light when it travels from one material into another.

• The bending of sound when it travels from one material into another.

• The bending of light when it travels from one material into another.

• The bouncing of sound when it travels from one material into another.

The '?' is referring to the...

• Inscident ray

• Sting ray

• Independant ray

• Incident ray

When light passes from air into glass it:

• Becomes faster

• Becomes slower

• Its speed does not change

Birds need to take REFRACTION into account when diving for fish in water because it makes the fish appear:

• Invisible

• Deeper than they are in reality

• Bent

• Shallower than they are in reality

When a laser beam is refracted as it passes from air into water, it is bent:

• Towards the abnormal

• Away from the normal

• Away from the abnormal

• Towards the normal

When a laser beam is refracted as it passes from glass to water, it is bent:

• Towards the normal

• Towards the abnormal

• Away from the normal

• Away from the abnormal

Light rays which are hitting different parts of a particular lens' surface either: (choose two)

• diverse

• diverge

• converse

• converge

All of the light rays hitting the surface of a lens are refracted by the same amount:

• True

• False

Concave lenses cause light rays to:

• diverge

• converge

If a beetle is located five focal lengths away from a magnifying glass, the image produced will be both:

• bigger & the right way up

• bigger & upside down

• smaller & upside down

• smaller & the right way up