Question

1)Water and kerosene Which exerted more buoyancy?why?
2) Capillary rise increases when the diameter of the capillary tube ----------------
3) Liquids having greater viscosity are called-----------
4) When temperature increases the viscosity of a liquid -----------.
5)----------- and ------------is working with the principle of law of floatation.



6)The weight of a body in air is 240N and weight in water is 190N.Find the buoyancy from water?

7) Which are the two factors that influence buoyancy?

8)state Archimedes principle

9)An iron block sinks on water ,but a ship made with tons of iron float on water.Why?

10)What is relative density? Which device is used to measure relative density?

11)State Pascal's law.Name two devices constructed on the basis of Pascal's law

12)Why do farm
ers plough the top soil during summer seasoen

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Answer 1

Answer:

kuch samaj he nahi a raha hai

Answer 2

archimedes principles state that upward byount force is exercted on abody immersed in a fluid