Question

A mercury barometer set up inside a sealed cabin on the moon containing air at our usual atmospheric pressure and temperature would stant about:
A. 760 mm
B. `((760)/(6))`mm
C. `(760xx6)`mm
D. zero

Answer 1

Correct Answer - C
As `P=hrhog`, when g becomes `(g)/(60`, h becomes 6h i.e., `(760xx6)`mm so that P remains the same (i.e., 760 mm of mercury colymn`-`our usual atmospheric pressure).