A point is on a $4 \mathrm{~m}$ long line between Light $\mathrm{A}$ and Light $\mathrm{B}$. Light $\mathrm{B}$ is 3 times as bright as Light $\mathrm{A}$. The intensity of light at a point is proportional to the brightness of the light divided by the square of the distance from the light to the point. Find the distance of the point from A that minimizes the intensity of the light at the point.

Question

Quizplus · Accepted Answer

The Answer of A point is on a $4 \mathrm{~m}$ long line between Light $\mathrm{A}$ and Light $\mathrm{B}$. Light $\mathrm{B}$ is 3 times as bright as Light $\mathrm{A}$. The intensity of light at a point is proportional to the brightness of the light divided by the square of the distance from the light to the point. Find the distance of the point from A that minimizes the intensity of the light at the point.

A Point Is on A 4 m4 \mathrm{~m}4 m Long Line Between Light A\mathrm{A}A

A Point Is on A $4 \mathrm{~m}$ Long Line Between Light $\mathrm{A}$