Question # 1

In pure capacitor A.C. circuit, the current I and charge q are.

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In phase

Out of phase

Parallel to each other

None of above

Substance which break just after the elastic limit is reached are called as.

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Ductile substances

Hard substances

Britto substances

Soft substances

SI unit of hennery which is.

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VSA-1

VS-1 A

VS-1A-1

VSA

A substance having the negative temperature co efficient of resistivity out of the following is.

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Carbon

Iron

Tungsten

Gold

Glass and high steel carbon are example of.

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Ductile substances

Brittle substances

Soft substances

Hard substances

When platinum is it becomes orange at.

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500^oC

900^oC

1100^oC

1300^oC

During negative half cycle of A.c then p-n junction offers.

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High resistance

Low resistance

No resistance

All of these

Selenium is

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Insulator is dark

Insulator in light

Conductor in dark

Semi conductor in dark

How many times, the alpha particle is more massive than electrons.

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6332

7332

8332

9332

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

Two parallel wires carrying currents in the opposite direction.

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Repel each other

Attract each other

Have no effect upon each other

They cancel out their individual magnetic fields.

A voltmeter is always connected in

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Parallel

Series

Perpendicular

Straight line

The early Greeks believed that matter waves was

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Discrete

Continuous

Both continuous and discrete

All of above

Two parrallel, metal plates are a distance 8.00 m apart. The electric field between the plates in uniform, Directed toward the right , and has a magnitude of 4.00 N/C. If an ion of charge +2e is released at rest at the left-hand plate. What is its kinetic energy when reaches the right-hand plate?

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4 eV

64 eV

32 eV

16 eV

The dead time of G.M tube is.

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10^-1 sec

10^-6sec

10^-4sec

10^-8sec

Which of the following quantities remain constant in step up transformer?

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Current

Voltage

Power

Heat

If the potential difference across two plates of capacitor is doubled, then energy stored in it will be.

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Two times

Eight times

Four times

Remain same

In A.C. inductor behaves as

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Capacitor

Resistor

Commutator

Transistor

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