Question

What will be the length of mercury column in a barometer
tube, when the atmospheric pressure is 75 cm of mercury
and tube is inclined at an angle of 60° with horizontal
direction?​

Answer 1

Answer:86.6 cm

Explanation:The barometric height h = 75cm.

If l is the length of  mercury column in the tube, then if h is the height of the mercury column in the tube, then h/l=sin60∘

or l=hsin60∘=75(3–√/2)=86.6cm

Answer 2

Answer:

86.6 cm

Explanation:

Given :

atmospheric pressure = 75 cm of Hg

Inclined Angle = 60

We are asked to find height in horizontal direction.

h = l sin Ф

Putting values here we get :

h = 75 sin 60

h = 75 ( √ 3 / 2 )

h = 86.6 cm

Therefore, height of mercury column in a barometer 86.6 cm.