Refractive Index

The velocity of light in vacuum is _______ m/s

• 3x10⁸
• 3x10¹²
• 3x10⁶
• 3x10¹⁰

Tags

NGSS.HS-PS4-1

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

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

• reflection 
• dispersion
• refraction
• total internal reflection

What is this called?

• refraction
• reflection
• reconstroction
• retraction

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What is the angle of refraction? (air n=1, crown glass n=1.532)

• 39.7 degrees
• 19.2 degrees
• 59.1 degrees
• 12.3 degrees

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say

Tags

NGSS.MS-PS4-2

If the angle of incidence of light traveling through air, and then striking water is 30 degrees what is the angle of refraction? (n=1 air, n=1.33 water)

• 15 degrees
• 22 degrees
• 43 degrees
• 17 degrees

Light has the lowest 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

Tags

NGSS.HS-PS4-1

• 1.5

• 1.4

• 1.45

• 1.55

• 20.4 degrees

• 21.2 degrees

• 22.1 degrees

• 23.1 degrees