Question # 1

Artificial polymers are made by a chemicals reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

The magnus effect is equivalent to

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Bernouli's theorem

Archimedes principle

Pascal's law

Blood pressure

The air plane lift is based on

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Archimedes principle

Law of conservation of momentum

Bernoulli's principle

Law of conservation of energy

The SI unit of modulus of elasticity us

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N m-2

N m-1

N m

N m -3

A cube with sides 2 cm long is made from a material of density 8 g cm -3 What is the density of the block is.

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0.2 g cm-3

0.5 g cm-2

2 g cm-3

5 g cm-3

The terminal velocity in case of spherical droplet is directly proportional to.

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Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

The dimensions of strain are.

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[MLT-2]

[ML-1T-2]

[ML-2T-3]

It is a dimensionless quantity

The extension produced in a sample of material depends upon

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Nature of the material

Stretching force

Cross range order

All of the above

Liquids with disordered structure frozen in are an example of

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Amorphous solids

Glassy solids

Crystalline solids

Polymeric molecules

The venturimeter is an instrument used for measuring the

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Viscosity of a liquid

Flow speed of a liquid

Compressibility of a fluid

Specific gravity of a liquid

The lowest stress at which strain increases in stress in called.

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elastic limit

Plastic limit

Yield point

Bulk strength

Which of the following solids exhibits only short range order.

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Amorphous solids

Polymeric solids

Crystalline solids

All of the above

When the deforming force applied on a body produces change in volume then it is said to be

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Tensile stress

Compression stress

Shear stress

Shear modulus

Viscosity of fluids with rise in temperature.

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Increases

Decreases

Remains constant

Vanishes

A solid object is

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Not elastic below the elastic limit

Not elastic above the elastic lime

Elastic below the elastic limit

Not elastic at all

In any fluid the effect of decrease in pressure with the increase in speed in a horizontal pipe is known as

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Bernoulli's effect

Venturi effect

Torriculli's effect

Shift effect

The Pressure will be low where the speed of the fluid is

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Zero

High

Low

Constant

A breaker is full of water with an ice piece floating The ice place has a lead piece in it When ice cube mells then.

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Water overflows

Level falls

Level remains unchanged

Density increases

The surface of a liquid is somewhat similar to a stretched membrane because.

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There is an elastic stress in the surface

Tension in the surface increases if the area is increased

The surface has a natural tendency to contract

Ripples can be produced on the surface

A force of 10 N acting on a certain spring produces an extension of 40 mm Two such spring are connected end to end and this double length spring is extended by 40 mm What is the strain energy.

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0.05 J

0.10 J

0.20 J

0.40 J

Powder clings to the face due to

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Compression

Capillary action

Cohesion

Adhesion

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PPSC Physics Chapter 2 Structural Properties of Matter MCQs With Answers

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