Q. 25.0( 3 Votes )

Fill in the blanks.

(a) The unit of pressure is _______.

(b) Ink rises into the ink dropper because of the _______ pressure acting on the surface of the ink in the bottle.

(c) When the piston of a pump is pulled up, the pressure inside _______.

(d) The air pressure inside our body is equal to the _______ .

Answer :

(a) The unit of pressure is N\m2(Newton Per meter square).


Since Standard (S.I) unit of force is Newton(N) and of area is meter square(m2) .And As we know that


Hence Standard (S.I) unit of pressure is N/m2 (Newton per meter square).


(b) Ink rises into the ink dropper because of the atmospheric pressure acting on the surface of the ink in the bottle.


On pressing the bulb of the dropper the air inside the dropper is pushed out of the hole in the dropper. This makes the pressure of the air in the bulb less than the atmospheric pressure. Hence to make the pressure inside the bulb equal to the atmospheric pressure outside, the ink rises in the dropper.


(c) When the piston of a pump is pulled up, the pressure inside Decreases.


When the piston of the pump is pulled up all the air inside the pump is pushed outside through the narrow tube, this reduces the pressure inside the piston. Due to this reduced pressure only the water comes inside the pump so that pressure inside the pump becomes equal to the atmospheric pressure outside.


(d) The air pressure inside our body is equal to the Atmospheric pressure.


The atmosphere exerts a pressure called as the atmospheric pressure. We do not get crushed by the pressure because the atmospheric pressure inside our body is equal to the atmospheric pressure outside.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
PressurePressurePressure44 mins
Quiz | Mastering Force & PressureQuiz | Mastering Force & PressureQuiz | Mastering Force & Pressure25 mins
Do you feel the Pressure?Do you feel the Pressure?Do you feel the Pressure?46 mins
Champ Quiz | Force & PressureChamp Quiz | Force & PressureChamp Quiz | Force & Pressure30 mins
Force and PressureForce and PressureForce and Pressure48 mins
Champ Quiz | Force, Pressure & FrictionChamp Quiz | Force, Pressure & FrictionChamp Quiz | Force, Pressure & Friction41 mins
Champ Quiz | Can you Identify the Force?Champ Quiz | Can you Identify the Force?Champ Quiz | Can you Identify the Force?32 mins
Learn About Force & Its TypesLearn About Force & Its TypesLearn About Force & Its Types36 mins
Genius Quiz | Force & PressureGenius Quiz | Force & PressureGenius Quiz | Force & Pressure40 mins
Genius Quiz | Force, Pressure & FrictionGenius Quiz | Force, Pressure & FrictionGenius Quiz | Force, Pressure & Friction32 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses