Question:
An open glass tube is immersed in mercury in such a way that a length of $8 \mathrm{~cm}$ extends above the mercury level. The open of the tube is then closed and sealed and the tube is raised vertically up by addition $46 \mathrm{~cm}$. What will be length of the air column above mercury in the tube now ?
(Atmospheric pressure $=76 \mathrm{~cm}$ of $\mathrm{Hg}$ )
Correct Option: , 3
Solution:
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