Question # 1

When body moves along a circular path with constant speed, it has an acceleration, which is always directed;

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Along the tangent

Towards the centre

Away from the centre

None of them

The dimensions of viscosity are:

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M²L^-1T^-2

M^-1L¹T^-1

M^-1L^-1T

ML^-1T^-1

To and fro motion of a body is about its mean position is known as:

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Translatory motion

Vibratory motion

Rotatory motion

None of these

The substances which break just after the elastic limit is reached, are known as

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brittle substances

ductile substances

plastic substances

elastic substances

If 250V is the RMS value of alternative voltage, then its peak value V_owill be:

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353.5V

250V

175V

zero

400V

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

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Metal has high specific heat

Metal has high thermal conductivity

Metal has low specific heat

Metal has low thermal conductivity

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

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circular

elliptical

cycloid

straight line

The direction of lines of force depends upon the direction of

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voltage

current

charges

none of these

An emf is set up in a conductor when it:

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is kept in a magnetic field

is kept in a electric field

Move across a magnetic field

Both (A) and (B)

None of these

The current is measured in

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volts

watt

ampere

ohm

The CRO is used for displaying the waveform of a given

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current

voltage

both of them

none of them

The original source of hydroelectric is

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Water

Wind

Sun

Moon

Young's modulus for water is

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0

2

5

9

A body of mass 5 kg is moving with a momentum of 10 kg m/s.A force of 0.2 N acts on it in the direction of motion of the body for 10 seconds.The increase in its kinetic energy is

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2.8 Joule

3.2 Joule

3.8 Joule

4.4 Joule

The mass distribution of a rigid body is

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Uniform

Not uniform

Both

None of these

The acceleration of the rocket is

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The function of colimator is

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To converge the incoming rays

To make the parallel rays from source

In which the source of light is kept

None of these

Substances that donot flow easily are

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Honey

Thick tar

Mobile oil

All of these

Geysers usually occur in

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Hot regions

Cold region

Volcanic regions

All of these

Bernoulli's equation related to pressure, fluid speed and height which is

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An important equation

Principal equation

Fundamental equation

None of these

By the fermentation of biomass using enzymes and by decomposition through bacterial action in the absence of air, we obtain

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Biogas

Ethanol

Benzene

None of these

The magnetism produced by electrons within an atom is due to

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Spin motion

Orbital motion

Spin and orbital motion

None of these

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