Question # 1

The quantity have dimension of ML²T⁰²will have SI unit of:

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Watt

Newton

Joule

Metre

The solids which has structure in-between order and disorder are called

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amorphous solids

polymeric solids

crystalline solids

all of them

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

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A

2 A

3 A

4 A

An emf is set up in a conductor when it

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Is kept in a magnetic field

Is kept in an electric field

Moves across a magnetic field

Both A and B

None of these

The basis to define a temperature scale that is independent of material properties is provided by

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carbon cycle

nitrogen cycle

Carnot cycle

irreversible cycle

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

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negative charges

positive charges

protons

electrons

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

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Zero

High

Low

Constant

What are the SI base units of the coefficient of viscosity

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Kg m s^-2

kgm² s^-2

Kg m s^-1

kg m^-1s^-1

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

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Minimum work

Maximum work

Zero work

Negative work

Which of the following represents an electric current?

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C^-1

CS^-1

J.S^-1

dynes^-1

The current that flows through the coil of a motor causes

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Its shaft to revolve

Its brushes to rotate

Motor to move

Its shaft to rotate

None of these

Those quantities which can be measured accurately are known as

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Physical Quantities

Scalar Quantities

Vector Quantities

Non Physical Quantities

A typical collector which absorbs energy directly from solar radiation upto about

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40 ^oC

70 ^oC

80 ^oC

90 ^oC

A body of mass 5 kg, initially at rest is moved by a force of 2 N on smooth horizontal surface the work done by the force in 10 s is

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20 j

30 j

40 j

60 j

The couple arm is

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The smallest distance between two equal and anti parallel forces

The greatest distance between two equal and anti parallel forces

The lines of action of two equal and opposite forces

None of these

The optical resolution of microscope or a telescope tells us how close together, the two point sources of light can be so that they are still seen as two separate sources

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Angular magnification

Resolution

Magnification

None of these

If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by

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λ/4

λ/2

λ

3/2λ

The atoms or molecules in a crystalline solid are held together by

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Attractive force

Gravitational force

Cohesive force

Electromagnetic force

The waste material of the process in a digester is a good

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Inorganic fertilizer

Organic fertilizer

Waste disposal

b and c

A box of mass 2 kg is at rest on top of a 0.75m high table. The weight of the object is 19.6 N. if the object is moved so that it falls to the ground, what will be the weight of the object after it has fallen 0.1 metre distance?

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19.2 N

19.6 N

19.8 N

not possible to determine from the given information

Which of the following is not a projectile?

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a bullet fired from a gun

a spaceship

a football in air

an artillery shell

A steel wire 12 mm in diameter is fastened to a log and them pulled by a tractor. The length of stire between the log and tractor is 11 m. The force of 10,000 N is required to pull the log. What is stress

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84.46 MPa

85.46 MPa

88.46 MPa

89.46 MPa

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