0
Tripling the distance from a constant intensity point will cause the illumination to?
Jtipton76
Decrease by a factor of 9
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How does light intensity vary with distance form the source?
Light intensity is inversely proportional to the square of the distance: I = k/d2
How does distance affect intensity of radiation?
The source doesn't care how far you are from it, or whether you're even there, andthere's no relationship between that and the intensity of the radiation it gives off.However, the intensity of the radiation that you receivefrom it is inversely proportionalto the square of your distance from it ... same math as for gravity.
Does sound Intensity decrease linearly with distance?
No, it follows the inverse square law. That is, the intensity is inversely proportional to the square of the distance. I2/I1 = (r1/r2)². Intensity decreases with 1/r² from increased distance, while the sound pressure decreases only with 1/r from increased distance.
Why the intensity of the light in a flashlight beam decreases as the flashlight moves farther away?
Because the constant amount of light that the flashlight produces is spread out over a larger area when it's farther away, so the intensity at every point is less. Light decreases inversely to the square of the distance.
What happens to the intensity of ionizing radiation when you move away?
The intensity reduces in proportion to the square of your distance from the source.
What would tripling the distance from a constant intensity point will cause the illumination to?
Become one ninth.
What is the formulae to calculate illumination of light at an angle?
If n is the intensity of light whose path is perpendicular to a surface (parallel to the normal), the intensity of the same light from the same distance onto the same surface but with an angle of incidence (measured from the normal) of Θ is n cosΘ (n times the cosine of theta).
How does light intensity vary with distance form the source?
Light intensity is inversely proportional to the square of the distance: I = k/d2
To what is the illumination of a surface by a light source directly proportional?
The illumination on the surface would be reduced by a factor of four, thereforeif the distance from a light source is doubled, the illumination provided by the source is one fourth as great.
How does distance affect intensity of radiation?
The source doesn't care how far you are from it, or whether you're even there, andthere's no relationship between that and the intensity of the radiation it gives off.However, the intensity of the radiation that you receivefrom it is inversely proportionalto the square of your distance from it ... same math as for gravity.
How does the intensity of a sound wave change if the distance from the source is reduced by a factor of 4?
- 6 dB is incorrect. It will decrease by 12 dB.
Does sound Intensity decrease linearly with distance?
No, it follows the inverse square law. That is, the intensity is inversely proportional to the square of the distance. I2/I1 = (r1/r2)². Intensity decreases with 1/r² from increased distance, while the sound pressure decreases only with 1/r from increased distance.
Does perpendicular lines have a constant distance between them?
No but parallel lines have a constant distance between them
What physical law describes the manner in which the intensity of sunlight changes as the observer moves away from the sun?
The Conservation of Energy or power Law. This gives the inverse distance law of Intensity: Intensity on Earth = intensity on sun (radius/sun distance to earth)2 .
Why the intensity of the light in a flashlight beam decreases as the flashlight moves farther away?
Because the constant amount of light that the flashlight produces is spread out over a larger area when it's farther away, so the intensity at every point is less. Light decreases inversely to the square of the distance.
What happens to the intensity of ionizing radiation when you move away?
The intensity reduces in proportion to the square of your distance from the source.
The intensity of a sound describes?
Its loudness at a particular distance
