Advertisements
Advertisements
प्रश्न
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
उत्तर
It is the buoyant force which makes objects appear lighter in water.
APPEARS IN
संबंधित प्रश्न
In what direction does the buoyant force on an object immersed in a liquid act?
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
A body sinks in a liquid A but floats in a liquid B. The density of liquid A is ....... than the density of liquid B.
Deduce an expression for the pressure at depth inside a liquid.
Explain why a gas bubble released at the bottom of a lake grows in size as it rises to the surface of the lake.
(i) The diameter of neck and bottom of a bottle are 2 cm and 10 cm, respectively. The bottle is completely filled with oil. If the cork in the neck is pressed in with a force of 1.2 kgf, what force is exerted on the bottom of the bottle?
(ii) Name the law/principle you have used to find the force in part (a).
Describe an experiment to show that a body immersed in a liquid appears lighter than it really is.
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
Salt water provides less buoyant force than freshwater.
