Quiz: Polarization Quest (physics)


Polarization QuestOnline version Polarization concepts quiz by Huda Obied 1 What does polarization mean in light waves? a Light intensities stay constant b Light oscillates in a single plane c Light travels at a fixed speed d Light has a fixed wavelength 2 How does polarized light differ from unpolarized light? a Polarized has multiple planes b Unpolarized cannot pass through filters c Polarized travels faster d Polarized has a preferred plane of oscillation 3 What happens when a polarizer and analyzer are rotated relative to each other? a They always block all light b Both always transmit 100% light c Light is partially or fully blocked depending on angle d They never affect light 4 Which setup can demonstrate polarization using a laptop screen and UV glasses? a UV glasses block all light b Glasses amplify intensity regardless of angle c Laptop screen emits unpolarized light d Laptop’s polarized light and angle with glasses shows modulation 5 State Malus’s law. a I = I0 cos theta b I = I0 a^2 theta c I = I0 sin theta d I = I0 cos^2 theta 6 If two polarizers are at 60° apart, what fraction of light is transmitted? a 0.75 of I0 b 1.0 of I0 c 0.25 of I0 d 0.5 of I0 7 What happens to intensity when polarizers are at 0° relative? a Zero transmission b Negative transmission c Better than 100% d Maximum transmission 8 What happens to intensity when polarizers are at 90°? a Maximum transmission b Minimum transmission (often near zero) c Transmits twice as much d No change in intensity 9 Which statement best describes an analyzer? a A device that changes wavelength b A light source c A lens for focusing light d A second polarizer used to analyze polarization state Feedback 1 Polarization refers to the oscillation direction of the electric field—confined to a plane. 2 Unpolarized light contains many planes; polarized light is confined to one plane. 3 Transmission varies with angle; at 90° most light is blocked, at 0° most is transmitted. 4 Laptop screens emit polarized light; rotating glasses changes transmission, revealing Malus-like behavior. 5 Malus’s law relates transmitted intensity to the square of the cosine of the angle between polarizers. 6 I/I0 = cos^2(60°) = (0.5)^2 = 0.25. 7 At 0°, the polarizers align and transmit the maximum intensity. 8 At 90°, cos^2(90°)=0, blocking light. 9 An analyzer is used after a polarizer to test polarization via transmission.

1

What does polarization mean in light waves?

a

Light intensities stay constant

b

Light oscillates in a single plane

c

Light travels at a fixed speed

d

Light has a fixed wavelength

2

How does polarized light differ from unpolarized light?

a

Polarized has multiple planes

b

Unpolarized cannot pass through filters

c

Polarized travels faster

d

Polarized has a preferred plane of oscillation

3

What happens when a polarizer and analyzer are rotated relative to each other?

a

They always block all light

b

Both always transmit 100% light

c

Light is partially or fully blocked depending on angle

d

They never affect light

4

Which setup can demonstrate polarization using a laptop screen and UV glasses?

a

UV glasses block all light

b

Glasses amplify intensity regardless of angle

c

Laptop screen emits unpolarized light

d

Laptop’s polarized light and angle with glasses shows modulation

5

State Malus’s law.

a

I = I0 cos theta

b

I = I0 a^2 theta

c

I = I0 sin theta

d

I = I0 cos^2 theta

6

If two polarizers are at 60° apart, what fraction of light is transmitted?

a

0.75 of I0

b

1.0 of I0

c

0.25 of I0

d

0.5 of I0

7

What happens to intensity when polarizers are at 0° relative?

a

Zero transmission

b

Negative transmission

c

Better than 100%

d

Maximum transmission

8

What happens to intensity when polarizers are at 90°?

a

Maximum transmission

b

Minimum transmission (often near zero)

c

Transmits twice as much

d

No change in intensity

9

Which statement best describes an analyzer?

a

A device that changes wavelength

b

A light source

c

A lens for focusing light

d

A second polarizer used to analyze polarization state

Feedback

1

Polarization refers to the oscillation direction of the electric field—confined to a plane.

2

Unpolarized light contains many planes; polarized light is confined to one plane.

3

Transmission varies with angle; at 90° most light is blocked, at 0° most is transmitted.

4

Laptop screens emit polarized light; rotating glasses changes transmission, revealing Malus-like behavior.

5

Malus’s law relates transmitted intensity to the square of the cosine of the angle between polarizers.

6

I/I0 = cos^2(60°) = (0.5)^2 = 0.25.

7

At 0°, the polarizers align and transmit the maximum intensity.

8

At 90°, cos^2(90°)=0, blocking light.

9

An analyzer is used after a polarizer to test polarization via transmission.

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Polarization Quest

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Polarization QuestOnline version

by Huda Obied

What does polarization mean in light waves?

How does polarized light differ from unpolarized light?

What happens when a polarizer and analyzer are rotated relative to each other?

Which setup can demonstrate polarization using a laptop screen and UV glasses?

State Malus’s law.

If two polarizers are at 60° apart, what fraction of light is transmitted?

What happens to intensity when polarizers are at 0° relative?

What happens to intensity when polarizers are at 90°?

Which statement best describes an analyzer?

Feedback

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