Question # 1

A body moving with uniform velocity has

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positive acceleration

negative acceleration

infinite acceleration

zero acceleration

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

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1.7 x 10³J

10.2 x 10³J

3..4 x 10³J

6.8 x 10³J

The unit of resistivity is

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ohm

ohm-m²

ohm-meter

ohm-m^-1

Surface tension of water is due to

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Inter molecular attractions

Inter molecular spaces

Inter molecular repulsion

None of above

The special theory of relativity treats problems invoving

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inertial frame of references

accelerating frame of references

both of these

none of these

At resonance, the impedance of RLC series circuit is

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Maximum

Zero

Minimum

Determinate

The torque per unit twist of coil is called

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proportionality constant

gravitational constant

boltzman constant

coupling constant

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

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(i) and (ii)

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

An ideal voltmeter has:

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Zero resistance

Small resistance

Large resistance

Infinite resistance

Both A and B

A voltage of 600V can be obtained virtually from

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Dry battery

Nickel cadmium battery

Head and tail of cell

Transformer

While applying Guass's Law assuming that the field is

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In different directions

Constant in direction

In all directions

None of these

The wave nature of light was proposed by

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Einstein

Maxwell

Huygen

Newton

Which of the following radiation will be focused farthest from a convex lens

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X - rays

γ - rays

Microwaves

β - rays

The disadvantage of the step-index fibre can be reduced by

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graded index fibre

non-graded index fibre

both of these

none of these

The Earth axis of rotation is

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Remains fixed

Remains fixed in one direction

Not fixed

None of these

Such a surface on which all the points have the same phase of vibration is known as

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wavefront

amplitude

displacement

all of them

If a force acts on a body whose action line does not pass through its centre of gravity.then the body will experience

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Angular acceleration

Linear acceleration

No acceleration

None of these

The relation between Cp and Cv is given by

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Cp = Cv

Cp < Cv

Cp > Cv

None of these

The smallest part of a crystal lattice is called:

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A molecule

An atom

A unit cell

A particle

The shape of crystals other than a cube have

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Right angles

Not right angles

Not corners

None of these

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