0

Guest

Courses New

A narrow glass tube, 80 cm long and opens at both ends, is half immersed in mercury, now the top of the tube is closed and is taken out of mercury. A column of mercury 20 cm long remains in the tube. Find atmospheric pressure

A narrow glass tube, 80 cm long and opens at both ends, is half immersed in mercury, now the top of the tube is closed and is taken out of mercury. A column of mercury 20 cm long remains in the tube. Find atmospheric pressure                 
 

Grade:12

1 Answers

Arun
25750 Points
5 years ago
When the glass tube is half dipped in mercury, pressure on top of mercury should be equal to the mercury pressure. 
Pressure is P1= 13.6 g (40)
After taking the tube out the pressure of mercury + 1 would be the atmospheric pressure. 
Atmospheric pressure = P1 + 13.6 g (20) = 13.6 g (40) +13.6 g (20)
Therefore the Atmospheric pressure would be 60cm of Hg column.

Think You Can Provide A Better Answer ?

Other Related Questions on Thermal Physics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More