JAMB - Physics (1979 - No. 28)
An air bubble rises from the bottom to the top of a water dam which is 40m deep. The volume of the bubble just below the surface is 2.5cm3. Find its volume at the bottom of the dam, if atmospheric pressure is equivalent to 10m water
0.0cm3
2.0cm3
1.6cm3
0.625cm3
0.5cm3
ব্যাখ্যা
At constant temperature P1V1 = P2V2
P2 = P1 + 40
= 10 + 40 = 50m
10 x 2.5 = 50 x V2
V2 = 0.5cm3
P2 = P1 + 40
= 10 + 40 = 50m
10 x 2.5 = 50 x V2
V2 = 0.5cm3