Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 10

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Density of the ice is $ρ$ and that of water is $σ .$ What will be the decrease in volume when a mass $M$ of ice melts.

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Important Questions on Fluid Mechanics

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 11

The reading of a spring balance when a block is suspended from it in air is

60

N .

This reading is changed to

40 N

when the block is fully submerged in water. The specific gravity of the block must be:

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 12

A block of steel of size

5 cm \times 5 cm \times 5 cm

is weighed in water. If the relative density of steel is

7

, then, its apparent weight is

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 13

Two bodies are in equilibrium when suspended in water from the arms of a balance. The mass of one body is

36 g

and its density is

9 g {cm}^{- 3} .

If the mass of the other is

48 g,

its density in

g {cm}^{- 3}

is

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 14

In order that a floating object be in a stable equilibrium, its centre of buoyancy should be _____.

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 15

A cork is submerged in water by a spring attached to the bottom of a bowl. When the bowl is kept in an elevator moving with acceleration downwards, the length of the spring-

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 16

An ice block contains a glass ball. When the ice melts within the water containing vessel, the level of water

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 17

A large ship can float but a steel needle sinks because of

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Alpha Question Bank for Medical: Physics>Chapter 13 - Fluid Mechanics>Exercise-1>Q 18

An iceberg of density

900 kg m^{- 3}

is floating in water of density

1000 kg m^{- 3}

. The percentage of the volume of the iceberg outside the water is