Malus's Law and Light Intensity

Malus's Law and Light Intensity

Assessment

Interactive Video

Physics, Science, Mathematics

9th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the concept of light as an electromagnetic wave and introduces polarization, where light oscillates in a single plane. It discusses how polarization affects the energy carried by light and introduces Malus's Law, which relates the intensity of polarized light to the angle of polarization. The tutorial includes exercises to apply Malus's Law and concludes with a summary and encouragement to explore further learning materials.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the nature of light as described in the video?

A sound wave

A gravitational wave

An electromagnetic wave

A mechanical wave

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the component of light that is parallel to the polarizer's axis?

It is scattered

It passes through

It is reflected

It is absorbed

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the energy of a wave related to its amplitude?

Energy is inversely proportional to amplitude

Energy is directly proportional to amplitude

Energy is independent of amplitude

Energy is proportional to the square of the amplitude

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between intensity and amplitude according to the video?

Intensity is independent of amplitude

Intensity is inversely proportional to amplitude

Intensity is proportional to the square of amplitude

Intensity is proportional to amplitude

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is Malus's Law used to calculate?

The wavelength of light

The intensity of light after passing through a polarizer

The frequency of light

The speed of light

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the angle between the polarization plane and the polarizer's axis is 60 degrees, what is the intensity of the light after passing through?

75 watts per meter square

100 watts per meter square

50 watts per meter square

25 watts per meter square

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the intensity of unpolarized light when it passes through a polarizer?

It becomes zero

It is halved

It remains the same

It doubles

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