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A mercury tube of length 100 cm. open a...

A mercury tube of length
100 cm. open at one end is kept
vertically with open end upwards. It
is filled with 10 cm of mercury to
trap an air column of height
40 cm. what will be the length of
trapped air if it is held vertically
with open end downwards ?
[ Assume atmospheric pressure to be 1 atm]

A

40.00 cm

B

32.00 cm

C

52.12 cm

D

82.00 cm

Text Solution

Verified by Experts

The correct Answer is:
C

Now `P_(1)V_(1)=P_(2)V_(2)`
`rArr(76+10)xx 40=(76-10) xx 1`
`rArr 86 xx 40 = 66 xx 1`
`rArr 1 = 52.12 " "cm`
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