Suong9 Light refraction

What do you call the bending of light as it passes from one medium to another?

• Reflection

• Recreation

• Refraction

• Rotatiom

What happens to the light when it travels from less dense to more dense medium?

• speed up

• slows down

• breaks

• parks

Light has the highest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45

• diamond
• water
• flint glass
• barium glass

Light passing from air to glass will cause the light to

• maintain its original speed 
• accelerate while it is in glass
• increase its speed
• reduce its speed

This shows the phenomenon known as....

• reflection
• refraction
• mirrors
• focal point

How does light behave as it enters these mediums?

• continue its path as straight line.
• bends toward the normal
• bends away from the normal
• reflects

Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.

Choose the conditions where light does not bend when entering a medium of different optical density,

• incident ray is normal to the refracting surface

• any obliquely incident ray

• angle of incidence is 90°

• angle of incidence is 0°

Absolute refractive index of any medium is always _______.

• less than 1
• greater than 1
• 1
• 0

Swimming pools and the ocean look shallower than they really are due to:

• reflection 
• dispersion
• refraction
• total internal reflection