REFRACTION AND REFRACTIVE INDEX

Jatin puts a pencil into a glass container having water and is surprised to see the pencil bend.Name the phenomenon responsible for the change.

• Reflection of light

• Refraction of light

• total internal reflection of light

• partial reflection and partial refraction

As the ray of light passes from air to glass, state how the wavelength of light changes.

• wavelength increases

• wavelength decreases

• wavelength remains constant

• wavelength decreases and then increases

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

Based on the image, which medium has a larger index of refraction?

• Medium 1 has a larger index of refraction.

• Medium 2 has a larger index of refraction.

• Both mediums have the same index of refraction.

• Cannot be determined.

Tags

NGSS.MS-PS4-2

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

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

When light passes at an angle to the normal from one material into another material in which its speed is lower

• it is bent towards the normal.
• it always lies along the normal.
• it is unaffected.
• it is bent away from the normal.

Tags

NGSS.MS-PS4-2

Which of the following is true about a wave that has been refracted?

• The speed and frequency changes, but the wavelength stays the same.

• The speed and wavelength changes, but the frequency stays the same.

• The wavelength and frequency changes, but the speed stays the same.

• The speed and frequency changes, but the amplitude stays the same.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

"The ratio of the sines of the angles of incidence and refraction is constant". This is definition for

• refractive index

• Snell's Law

• refraction of light

• total internal refraction

Given the refractive index of the block is 1.66. Determine the value of r.

• 30.12°

• 0.46°

• 27.48°

• 0.03°