Question

B. Sound intensity of a jet plane at a distance of
1 km is 80 W/m² What will be the intensity
at 2 km?
A. 20 W/m2
B. 40 W/m?
C. 10 W/m
D. I W/m2​

Answer 1

Answer:

A.20 W/ m²

Explanation:

intensity inversely proportional to area

80 /I = (2 ×10³)²/(1 ×10³)²

I = 80/4

I = 20 W/m²

Answer 2

20 W/m2 is the answer