MEDIUM
9th CBSE
IMPORTANT
Earn 100

Explain why big boulders can be moved easily by floods.

Important Questions on Gravitation

MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 13
Why is a slight blow (push) on a cork of bottle fully filled with liquid sufficient to break the bottle?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 14
Why do objects float or sink when placed on the surface of a liquid?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 15
What happens to the buoyant force as more and more volume of a solid object is immersed in a liquid?  When does the buoyant force become maximum?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 16
Why does ice float on water?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 17
What is the relationship between the buoyant force on an object and the liquid displaced by it?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 18
What is the relation between true weight, apparent weight and the buoyant force?
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9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 19
The mass of a block made of certain material is 13.5 kg and its volume is 15×10-3 m3. Will the block float or sink in water? Give a reason for your answer.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 20
Lead has greater density than iron and both are denser than water. Is the buoyant force on a lead object greater than, less than or equal to the buoyant force on an iron object of the same volume?