Physics XI Content
Fluid Static-Old is Gold
- Why does ice float in water?
- Why is the bottom of a ship madeheavy?
- Steel balls sink in water but theydon’t sink in mercury. Why?
- Does a ship sink more in riverwater or in sea water? Explain.
- Lead has a 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 as iron object of the same volume?
- State the laws of flotation.
- What are centre of buoyancy andmetacentre?
- A piece of ice is floating in water. Will the water level rise if the ice melts completely? Explain.
- Why is easier to lift a body in aliquid than in air?
- A helium filled balloon rises to acertain height and then halts. Why?
- A cork is floating in water. What is the apparent weight of the cork?
- How will you make differencebetween density and specific gravity of a body?
- A body floats in a liquid contained in a beaker. The whole system falls under gravity. What is the upthrust on the body due to liquid?
- If a cork is released from thebottom of a jar filled with water, what will happen and why?
- How will you justify that stone ismore rigid than iron?
- Why do bigger air bubbles rise faster than the smaller ones in boiling water?