Question # 1

The force on a charge particle moving parallel to magnetic field is:

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Maximum

Minimum

Zero

None of these

If the medium between the charges is not free space then electrostatic force will.be

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Increase

Decrease

Remain same

None of these

A galvanometer is an electrical instrument used to

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Measure resistance

Measure voltage

Detect passage of current

None of these

Torque on a current carrying coil

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τ=IBA cos

τ = ILB sinα

τ = IBA sinα

τ = ILBcosα

Force on a charged particle is zero when projected at angle with magnetic field.

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0 ^o

90^o

180^o

270^o

The inductive reactance of a coil is direction proportional to.

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Inductance

Resistance

Frequency of A.C.

Both frequency of A.C. and inductance

For Paschen series, the value of 'n' starts from

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2

4

6

8

amu =

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1.06 x 10^-27 kg

1.6606 x 10^-27 kg

1.520 x 10^-21 kg

1.6606 x 10^-31 kg

A battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

Which of the following are not hadrons.

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Muons

Mesons

Positrons

Neutrons

When a charge is projected perpendicular to a uniform magnetic field, tis path is

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Spiral

Helix

Ellipse

Circular

Curie is unit of.

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Conductivity

Binding energy

Radioactivity

Resistivity

If V_rms be the root mean square value of emf then its peak to peak value is given by

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Energy of Black body radiation depends upon

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Nature of surface of body

Nature of material of body

Shape and size of body

Temperature of the body

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

A current generator device converts:

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Mechanical energy into chemical energy

Chemical energy into electrical energy

Mechanical energy into electrical energy

Both b and c

In AC system we generate sine wave form because:

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It san be easily draw

It produces least disturbance in electrical circuits

It is nature standard

Other waves cannot be produced easily

The unit of resistance is:

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Ω

Ωm

Ω^-1m^-1

Ωm^-1

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