Snell's Law test - Assessment

1.

Multiple Choice

30 sec

1 pt

Snell's Law describes the relationship between the ________ angle and the _______ angle of waves passing through two different media

incident - reflected

incident - refracted

incident - bounced

answer is not here

2.

Multiple Choice

30 sec

1 pt

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

3.

Multiple Choice

30 sec

1 pt

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

4.

Multiple Choice

30 sec

1 pt

A higher index of refraction means that the wave travels _____________ the speed of light in a vacuum in that medium.

Faster than

Slower than

Equal to

Answer is not here

5.

Multiple Choice

1 min

1 pt

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

6.

Multiple Choice

30 sec

1 pt

The index of refraction, is defined as the ratio of the speed of light in a vacuum (c = 3x10^8 m/s) to the speed of light in a medium. What is the index of refraction of a medium where the speed of light is 0.7c ? Round off your values to 3 sig. figs.

1.42

1.43

1.28

1.29

7.

Multiple Choice

2 mins

1 pt

Find the speed of the refracted wave using the wave equation: v = (f)(L)

*Where v = speed of the wave, f = frequency and L = Wavelength.

And the following data set:

L1= 650nm

V1 = 0.71c

V2 = 0.41c

*Remember that:

For medium 1, we have V1= (f)(L1)

For medium 2 we have V2=(f)(L2).

528 nm

800 nm

375 nm

1126 nm

8.

Multiple Choice

30 sec

1 pt

For light passing across the boundary from higher to lower index of refraction medium, the angle of refraction is always _________________________

greater than the angle of incidence

less than the angle of incidence

equal to the angle of incidence

9.

Multiple Choice

1 min

1 pt

Light travels from water (n = 1.333) into an unknown medium. If the angles of incidence and refraction are 45^oand 24º respectively. what is the index of refraction of the unknwon medium? Round off your values to 3 sig. figs.

2.32

2.31

0.77

0.76

10.

Multiple Choice

30 sec

1 pt

There are certain angles of incidence for which the angle of refraction is close to 90°. What is this angle called?

Total internal angle

Critical angle

Reflection angle

Refracted angle

Explore this activity with a free account