Question # 1

A field free region is found:

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Near the outer surface of a hollow charged metal sphere

In the interior of solid metal uncharged sphere

In the interior of solid metal charged sphere

Both (A) and (B)

Both (A) and (C)

Which one is conservative force

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Electric force

Frictional force

Normal force

Air resistance

The waveform of alternating voltage is a:

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Square

Rectangular

Saw-tooth

Sinusoidal

None of these

The motion in a plane is the motion in

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one dimension

two dimension

three dimension

four dimension

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

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1/3 V

2/3 V

3/2 V

3V

A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from

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2nd group

fourth group

fifth group

sixth group

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

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Newton's second law

Pascal's law

Carnot theorem

Second law of thermodynamics

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

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Decreases

Increases

Remains the constant

Either of these

None of these

Work done is lowering the bucket into the well is:

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Zero

Positive

Negative

None of these

The induced current in a conductor depends upon

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both A and B

None of these

A steady current is flowing in a conductor of non-uniform cross-section. Thecharge passing through any cross-section per unit time is

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Directly proportional to the area of cross-section

Inversely proportional to the area of cross-section

Proportional to square of the area of cross-section

Independent of the area of cross-section

The measure of the deformation in a solid when stress in applied to it is called

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elastic constant

Young's modulus

strain

elasticity

The relative velocity of a particle moving with velocity V with respect to itself is

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Zero

V

-V

None of these

Torque = Force x ?

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Speed

Momentum

Moment arm

Couple arm

The dimensions of Planck's constant is equal to that of

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Energy

Momentum

Angular momentum

Power

Find the change in internal energy when heat transferred to the system is 42 J

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15 J

10 J

5 J

2.5 J

The speed of flying bee is

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1 ms^-1

5 ms^-1

8 ms^-1

10 ms^-1

The displacement time graph for the two particles A and B are straight lines inclined at 60° and 30° with the same axis.The ratio of the velocity of B is

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1:1

2:1

3:1

4:1

A wave which consists of a single, non-repetitive disturbance is called a

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Continuous wave

Longitudinal wave

Pulse

Transverse wave

Absolute zero is considered as that temperature at which:

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All liquids become gases

All gases become liquids

Water freezes

None of these

The charge determined by the Millikan's experiment is

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q = qvd/m

q = mvd/g

g = mgd/v

None of these

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