According to the inverse square law of light, how will the apparent brightness of an object...
According to the inverse square law of light, how will the apparent brightness of an object change if its distance to us doubles?
Its apparent brightness will decrease by a factor of 4.
Its apparent brightness will increase by a factor of 2.
Its apparent brightness will remain the same.
Its apparent brightness will decrease by a factor of 2.
Its apparent brightness will increase by a factor of 4.
CHOOSE ONE
Homework Answers
Inverse square law of light states that an objects apparent brightness depends on its actual luminosity and the inverse square of its distance from the observer.
Apparent brightness is inversely proportional to square of distance so if the distance is then square of double distance will be 4
So if the distance increases then the apparent brightness will decrease by factor 4 because it is inversely proportional.
So option A is the correct statement.
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