MEDIUM
9th ICSE
IMPORTANT
Earn 100

A solid of density 5000 kgm-3 weighs 0.5 kg  in air. It is completely immersed in a liquid of density 800 kgm-3. Calculate the apparent weight of the solid in the liquid.

Important Questions on Fluids

HARD
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>ILLUSTRATIVE NUMERICALS>Q 15
The neck and bottom of a bottle have diameters 2 cm and 8 cm respectively. The bottle is completely filled with kerosene. If the cork in the neck is pressed with a force of 10 N what force is exerted on the bottom of the bottle? Name the law/principle you have used to find this force.
EASY
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 1
You are given two identical bottles. One is empty with an open mouth and the other is filled with helium and sealed. Which will weigh more?
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 2
In a simple barometer, the length of the tube is about 1 m. If in the barometer, mercury is replaced by water, would you require a longer tube or a shorter tube?
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 3
Two blocks of equal masses of lead and copper are immersed in water. They experience buoyant forces F1 and F2 respectively. What will be the ratio of F1 and F2 (>,=or <1) ?
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 4
Why does a hydrogen-filled balloon rise up?
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 5
State four uses of hydraulic press.
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 6
Explain how a submarine can sink and rise in water.
MEDIUM
9th ICSE
IMPORTANT
Together With Physics Class 9>Chapter 4 - Fluids>Self Evaluation Test>Q 7
State three characteristics of a floating body.