What does the inverse square law describe in relation to a light bulb?

Intensity of Light and Inverse Square Law

Interactive Video
•
Physics, Mathematics, Science
•
7th - 10th Grade
•
Hard

Lucas Foster
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The color of the light emitted
The intensity of light based on distance
The temperature of the light bulb
The shape of the light bulb
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula represents the intensity of light according to the inverse square law?
Intensity = Power - Distance
Intensity = Power + Distance
Intensity = Power / (4πr²)
Intensity = Power x Distance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the distance from a light source is doubled, what happens to the intensity?
It becomes one-half
It becomes one-fourth
It remains the same
It doubles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the intensity of light at 3 meters if it is 360 watts per square meter at 1 meter?
120 watts per square meter
90 watts per square meter
40 watts per square meter
160 watts per square meter
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the intensity change if the distance is tripled?
It remains the same
It reduces by a factor of 6
It reduces by a factor of 9
It reduces by a factor of 3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the intensity of light at 4 meters if it is 800 watts per square meter at 3 meters?
600 watts per square meter
400 watts per square meter
800 watts per square meter
900 watts per square meter
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the word problem, what is the initial intensity at 4 meters?
1000 watts per square meter
400 watts per square meter
600 watts per square meter
800 watts per square meter
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