Properties Of Solids And Liquids Question 295
Question: A barometer tube reads 76 cm of mercury. If the tube is gradually inclined at an angle of 60o with vertical, keeping the open end immersed in the mercury reservoir, the length of the mercury column will be
Options:
A)152 cm
B)76 cm
C)38 cm
D)$ 38\sqrt{3}cm $
Show Answer
Answer:
Correct Answer: A
Solution:
$ \cos 60{}^\circ =\frac{h}{l} $
therefore $ l=\frac{h}{\cos 60{}^\circ }=\frac{76}{1/2} $
$ l=152\ cm $
