Answer available
Class 9 · Physics · Fluids
Why is it easier to swim in sea water than in river water?
3 marksMediumApplication based
ICSE question bank
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11 questions
- Answer available
Class 9 · Physics · Fluids
A body weighs 50 gf in air and 30 gf when fully immersed in water. Find the upthrust, the volume of the body and its relative density.
3 marksMediumNumerical
- Answer available
Class 9 · Physics · Fluids
The relative density of a substance is 2.5. What is its density in kg m−3, and will it float on water?
3 marksMediumNumerical
- Answer available
Class 9 · Physics · Fluids
A body of volume 200 cm3 is fully immersed in water. Calculate the upthrust on it. Take the density of water as 1 g cm−3 and g = 10 m s−2.
3 marksMediumNumerical
- Answer available
Class 9 · Physics · Fluids
Why does a ship float although it is made of iron, which is denser than water?
3 marksMediumShort answer
- Answer available
Class 9 · Physics · Fluids
State Archimedes' principle and the law of flotation.
3 marksMediumShort answer
- Answer available
Class 9 · Physics · Fluids
A force of 200 N acts normally on a surface of area 0.5 m2. Calculate the pressure.
3 marksMediumNumerical
- Answer available
Class 9 · Physics · Fluids
Calculate the pressure exerted at the bottom of a tank of water 5 m deep. Take the density of water as 1,000 kg m−3 and g = 10 m s−2.
3 marksMediumNumerical
- Answer available
Class 9 · Physics · Fluids
Define thrust and pressure and state the SI unit of each.
2 marksEasyShort answer
- Answer available
Class 9 · Physics · Fluids
State the principle of Archimedes.
2 marksEasyShort answer
- Answer available
Class 9 · Physics · Fluids
A body of volume 100 cm3 is completely immersed in water. Calculate the upthrust acting on it. (Density of water = 1 g cm−3, g = 10 m s−2)
3 marksMediumNumerical