EASY
9th ICSE
IMPORTANT
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Pressure at a point a _____  (Vector / Scalar) quantity?

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Important Questions on Fluids

EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 2
Why does a block of plastic when released under water come upto the surface of water? Give reason.
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 3
Why does a balloon filled with helium rise in air and filled with carbon dioxide does not rise? Explain.
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 4
The volume of a balloon is 1100 m3. It is filled with a helium of density 0.18kgm-3. What maximum load can it lift? The density of air 1.29kgm-3.
HARD
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 5
A solid of density ρ has weight w. Show that its apparent weight will be w 1-ρlρ when it is completely immersed in a liquid of density ρl.
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 6
What is hydrostatic paradox? Illustrate with the help of a diagram.
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 7
Why does an iron nail sink in water, while a large ship made of iron float?
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 7
Why it is easier to lift a heavy stone immersed in water?
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>PRACTICE QUESTIONS>Q 8
Why it is dangerous for a ship to be lightly loaded?