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A girl stands on a box having 60 cm leng...

A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm thickness in three ways. In which of the following cases, presure exerted by the brick will be

A

maximum when length and breadth form the base

B

maximum when breadth and thickness from the base

C

maximum when thickness and length form the base

D

the same in all the above three cases

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MODERN PUBLICATION-FLOATING BODIES-EXERCISE
  1. An object is put one by one in three liquids having different densitie...

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  2. An object weighs 10 N in air. When immessed fully in liquid, it weighs...

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  3. A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm th...

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  4. A body floats 1/3 of its volume outside water and 3/4 of its volue out...

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  5. A hydrometer floats with half of its stem outside water surface. It s ...

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  6. Ice is floating on water in a beaker when ice completely melts then le...

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  7. The volume of a substance is 20 cm^3. The mass of the substance if its...

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  8. Why is it easier to swim in sea water than in rise water?

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  9. A body floats in liquid when

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  10. Which will be easier to lift?

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  11. A piece of cork of mass 4 kg floats in water with 40% of its volume un...

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  12. A body of weight 70 N is floating in a liquid. The buoyont force actin...

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  13. A body weighs 100N in air. It measures 80N when partially immersed in ...

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  14. A 2 cm cubical lock of mass 2 kg is lying on the ground What is the pr...

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  15. Which of the following units is used to measure thrust?

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  16. A block of wood floats in a liquid of density 0.8 g cm^-3 with one fou...

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  17. If equal masses of water and a liquid of relax density 2 are mixed tog...

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  18. What is centre of buoyancy?

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  19. The S.I unit of relative density is

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  20. State the relationship between thrust and pressure.

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