EASY
11th West Bengal Board
IMPORTANT
Earn 100

What is centre of buoyancy ? In which situation centre of buoyancy and centre of gravity of a body immersed in a liquid coincide ?

Important Questions on Fluid Statics

EASY
11th West Bengal Board
IMPORTANT
What is Torricelli vacuum? Is it perfectly vacuum ? Explain with reasons what happens in the following case:-
A glass tube 1 m long and closed at one end, is filled with mercury and then inverted over a trough of mercury with the open end dipping into the mercury of the trough, in a vertical position.
EASY
11th West Bengal Board
IMPORTANT
What is Torricelli vacuum? Is it perfectly vacuum ? Explain with reasons what happens in the following case:-
A glass tube 1 m long and closed at one end, is filled with mercury and then inverted over a trough of mercury with the open end dipping into the mercury of the trough, in a vertical position and the glass tube is gradually inclined to the vertical.
EASY
11th West Bengal Board
IMPORTANT
What is Torricelli vacuum? Is it perfectly vacuum ? Explain with reasons what happens in the following case:-
A glass tube 1 m long and closed at one end, is filled with mercury and then inverted over a trough of mercury with the open end dipping into the mercury of the trough, in a vertical position and then a wider tube is taken.
EASY
11th West Bengal Board
IMPORTANT
"Atmosphere exerts a pressure of about 104 kgf per sq. metre" - explain the statement clearly.

What do you mean by standard atmospheric pressure ? Determine the magnitude of normal atmospheric pressure in 'bar' unit.

EASY
11th West Bengal Board
IMPORTANT
"Atmosphere exerts a pressure of about 104 kgf per sq. metre" - explain the statement clearly.

"The atmospheric pressure at a place is 760 mm of mercury" - What do you understand by this statement ?

EASY
11th West Bengal Board
IMPORTANT
"The standard atmospheric pressure is equal to the pressure due to 6 cm of mercury at 0°C, 45° latitude and mean sea-level." Briefly explain why it is necessary to mention the temperature, latitude, and height relative to sea-level in the above definition.
EASY
11th West Bengal Board
IMPORTANT
Some air is believed to have entered into the Torricellian vacuum of a barometer. How can you be sure of that ?
EASY
11th West Bengal Board
IMPORTANT
What will you conclude if you observe that the height of mercury column in the barometer rises steadily?