Light - Math portion

If light travels from a higher to a lower index of refraction medium the light will

• bend away from the vertical axis or may not refract

• bend closer to the vertical axis

• not bend

• answer is not here

If light travels from a lower to a higher index of refraction medium the light will

• bend away from the vertical axis

• bend closer to the vertical axis

• not bend

• answer is not here

Light travels from air (n = 1.000) into an optical fiber. If the angles of incidence and refraction are 22^oand 15º respectively. what is the index of refraction inside the fiber? Round off your values to 3 sig. figs.

• 1.45

• 1.44

• 0.69

• 0.70

What is the speed of light in a vacuum?

• 3.0 x 10⁸ m/s

• 1.0 x 10⁸ m/s

• 10 m/s

• 5.0 x 10⁸ m/s

What is the speed of light in a material that has an index of refraction of 1.88?

• 3.0 x 10⁸ m/s

• 1.88 x 10⁸ m/s

• 1.6 x 10⁸ m/s

• 5.64 x 10⁸ m/s

If a material has an index of refraction of 2.3, how fast will light travel through that material?

• 2.3 x 10⁸ m/s

• 6.9 x 10⁸ m/s

• 3.0 x 10⁸ m/s

• 1.3 x 10⁸ m/s

If light travels through a piece of glass at 2.1 x 10⁸ m/s, what is the index of refraction of the glass?

• 1.14

• 1.43

• 2.10

• 6.3

Light travels from air (n = 1.00) into a second material. The incident ray of light hits the surface at angle of 64^o and the refracted ray enters the second material at an angle of 32^o. What is the index of refraction of the second material? n₁sin(Θ₁) = n₂sin(Θ₂)

• 1.4

• 0.90

• 0.53

• 1.7

According to the Law of reflection, a light ray striking a mirror

• continues moving through the mirror in the same direction
• moves into the mirror at a slightly different angle
• bounces off the mirror toward the direction it came from
• bounces off the mirror at the same angle it hits.

Glass has a _____________ index of refraction than air.

• Equal
• Greater
• Less
• Impossible to say