Pressure difference problem

Question

An open glass tube is immersed in mercury in such a way that a length of 8cm extends above the mercury level . The open end of the tube is  then closed and sealed and the tube is raised vertically  up by an additional  46cm . What will be length  of air column above mercury in the tube now

A) 16cm

B)22cm

C)38cm

D) 6cm

Answer 1

Thus, length of the air column

=54-38=16

So, option (A) is correct