contestada

If the distance of the screen is moved from 100. Cm to 200. Cm the area of light would in-crease from 150. Cm^2 to A. 37.5 cm2 B. 75 cm2 C. 300 cm2 D. 600 cm2

Respuesta :

Answer:

75 cm

Explanation:

The distance of the screen varies inversely proportional to the area subtended.

[tex]\frac{d_1}{d_2}=\frac{A_2}{A_1}\\\frac{100}{200}=\frac{A_2}{150}\\A_2=75 cm[/tex]

When the distance is increased from the screen, the area would decrease to 75 cm.