Advertisements
Advertisements
प्रश्न
A small block of wood is completely immersed in (i) water, (ii) glycerine and then released. In each case, What do you observe? Explain the difference in your observation in the two cases.
Advertisements
उत्तर
Observation: Volume of a block of wood immersed in glycerine is smaller as compared to the volume of block immersed in water.
Explanation: Density of glycerine is more than that of water. Hence, glycerine exerts more upthrust on the block of wood than water, causing it to float in glycerine with a smaller volume.
APPEARS IN
संबंधित प्रश्न
Name the force which makes heavy objects appear light when immersed in a liquid.
A body while floating sinks deeper in a liquid of low density than in a liquid of high density.
The weight of a body is more than the buoyant force experienced by it, due to a liquid. The body will
Explain the meaning of the statement
‘Relative density of aluminium is 2.7’.
Explain why an iron needle sinks in water, but a ship made of iron floats on water.
A tall vertical cylinder filled with water is kept on a horizontal table top. Two small holes A and B are made on the wall of the cylinder, A near the middle and B just Below the free surface of water. State and explain your observation.
The pressure inside a liquid of density p at a depth h is :
It is easier to lift a heavy stone under water than in air. Explain.
Complete the following sentence :
Two balls, one of iron and the other of aluminium experience the same upthrust when dipped completely in water if _____________ .
A body is held inside water contained in a vessel by tying it with a thread to the base of the vessel. Name the three forces that keep the body in equilibrium, and state the direction in which each force acts.
