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Firlakuza [10]
3 years ago
5

The color of an object that the human eye senses depends on the color of light that shines on the object and the color of light

that is reflected or absorbed by the object. If white light shines on an object and the object appears blue, this means that
A. the object absorbs all light that strikes it.
B. the object reflects blue light more than it does any other color.
C. the object reflects all light that strikes it.
D. the object absorbs blue light more than it does any other color.
Physics
2 answers:
klasskru [66]3 years ago
5 0

Answer: B

Explanation:

eduard3 years ago
4 0

Answer:

B. the object reflects blue light more than it does any other color.

Explanation:

The color of an object as we see it corresponds to the wavelength of the light that the object reflects.

Let's consider an object on which white light is shone, as in this problem. If the object absorbs all the possible wavelengths of visible light, the object will not reflect any colour, so it will appear black. However, if the object reflects at least one color, the light of that color (reflected by the object) will reach us, so we will see the object in that color.

Therefore, in this problem, the object appears blue because it reflects blue light more than the other colors.

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-8.0 \times 10 ^{-19 }\ C,\ -3.2 \times 10 ^{-19 }\ C, -4.8 \times 10 ^{-19 }\ C

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<u>Charge of an Electron</u>

Since Robert Millikan determined the charge of a single electron is

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Let's test the possible charges listed in the question:

-8.0 \times 10 ^{-19 }. We have just found it's a possible charge of a particle

-3.2 \times 10 ^{-19 }. Since 3.2 is an exact multiple of 1.6, this is also a possible charge of the oil droplets

-1.2 \times 10 ^{-19 } this is not a possible charge for an oil droplet since it's smaller than the charge of the electron, the smallest unit of charge

-5.6 \times 10 ^{-19 },\ -9.4 \times 10 ^{-19 } cannot be a possible charge for an oil droplet because they are not exact multiples of 1.6

Finally, the charge -4.8 \times 10 ^{-19 }\ C is four times the charge of the electron, so it is a possible value for the charge of an oil droplet

Summarizing, the following are the possible values for the charge of an oil droplet:

-8.0 \times 10 ^{-19 }\ C,\ -3.2 \times 10 ^{-19 }\ C, -4.8 \times 10 ^{-19 }\ C

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