Physics > 2001 > 4
JAMB UTME
The height at which the atmosphere ceases to exist is about 80km. If the atmospheric pressure on the ground level is 760mmHg, the pressure at a height of 20km above the ground level is
A.
380 mmHg
B.
190 mmHg
C.
570 mmHg
D.
480 mmHg
Answer: B
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