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jek_recluse [69]
3 years ago
7

According to the inverse square law of light, if you double your distance to a source, the brightness will...

Physics
2 answers:
blondinia [14]3 years ago
7 0

Answer:

option (b)

Explanation:

According to the inverse square law,

Brightness \alpha \frac{1}{distance^{2}}

As the distance is doubles, the brightness becomes one fourth.

It means the brightness decreases by a factor of 4.

Option (b)

GalinKa [24]3 years ago
6 0

Answer:

a. decrease by a factor of 3.

Explanation:

The intensity of light is inversely proportional to the square of distance.

I ∝1/d^2

or

I= k/d^2

where k is a constant

so, if d becomes 2d , I will be come I/4

Therefore, intensity will a. decrease by a factor of 3.

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