Properties of Matter 4 Question 4
6. An open glass tube is immersed in mercury in such a way that a length of extends above the mercury level. The open end of the tube is then closed and sealed and the tube is raised vertically up by additional . What will be length of the air column above mercury in the tube now? (Atmospheric pressure of )
(2014 Main)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 6. (b)
Solution:
- Decrease in surface energy = heat required in vaporisation.