Question

Which of the following best describes an inverse-square relationship?(A) Daylight on Mars is dimmer than daylight on Earth.(B) A camera flashbulb produces a sudden burst of light.(C) When you blow out a candle, the room darkens.(D) Installing compact fluorescent bulbs reduces your electric bill.

Answer 1

The inverse-square relationship states:

The intensity of the light to an observer from a source is inversely proportional to the square of the distance from the observer to the source. According to this, we can describe this mathematically as follows:

`(I1)/(I2)=(d1^2)/(d2^2)`

In this sense:

Let:

I1 = Intensity of light in earth

I2 = Intensity of light in mars

d1 = distance from sun to the earth

d2 = distance from sun to mars

If the light on mars is dimmer:

I2besides:

d2>d1

So, we can conclude that the most accurate statement is:

(A) Daylight on Mars is dimmer than daylight on Earth.