Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The stretching of a spring is determined by the shear modulus of the material of the spring. Reason (R): A coil spring of copper has more tensile strength than a steel spring of same dimensions. In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

If a soap bubble expands, the pressure inside the bubble

is equal to the atmospheric pressure

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A wind with speed $40 m s^{- 1}$ blows parallel to the roof of a house. The area of the roof is $250 m^{2}$ . Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the direction of the force will be : $(ρ_{air} = 1.2 kg m^{- 3})$

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Important Questions on Properties of Bulk Matter

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 25th July 2015>Q 37

The value of coefficient of volume expansion of glycerin is

5 \times 10^{- 4} K^{- 1}

. The magnitude of fractional change in the density of glycerin for a rise of

40^{o} C

in its temperature is:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 25th July 2015>Q 38

Water rises to a height 'h' in capillary tube. If the length of capillary tube above the surface of water is made less than 'h', then:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 25th July 2015>Q 39

The Young's modulus of steel is twice that of brass. Two wires of same length and of same area of cross-section, one of steel and another of brass are suspended from the same roof. If we want the lower ends of the wires to be at the same level, then the weights added to the steel and brass wires must be in the ratio of:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 25th July 2015>Q 40

The cylindrical tube of a spray pump has radius

R

, one end of which has

n

fine holes, each of radius

r

. If the speed of the liquid in the tube is

V

, the speed of the ejection of the liquid through the holes is :

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 4th May 2014>Q 41

Copper of fixed volume

V

is drawn into wire of length

l

. When this wire is subjected to a constant force

F,

the extension produced in the wire is

∆ l .

Which of the following graph is a straight line?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 4th May 2014>Q 42

A certain number of spherical drops of a liquid of radius

r

coalesce to form a single drop of radius

R

and volume

V .

T

is the surface tension of the liquid then:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 4th May 2014>Q 43

Steam at

100^{o} C

is passed into

20 g

of water at

10^{o} C .

When water acquires a temperature of

80^{o} C,

the mass of water present will be:
[Take specific heat of water

= 1 c a l g^{- 1 o} C^{- 1}

and latent heat of steam

= 540 c a l g^{- 1}]

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 7 - Properties of Bulk Matter>AIPMT - 4th May 2014>Q 44

Certain quantity of water cools from

70^{o} C

60^{o} C

in the first

5

minutes and to

54^{o} C

in the next

5

minutes. The temperature of the surroundings is:

A wind with speed 40 m s-1 blows parallel to the roof of a house. The area of the roof is 250 m2 . Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the direction of the force will be : ρair =1.2 kg m-3

Important Questions on Properties of Bulk Matter

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