Question # 1

Direct current can not flow through.

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Inductor

Resistor

Transistor

Capacitor

If both the length and radius of the rod are doubled, then the modulus of elasticity will:

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Increase

Decrease

Remains the same

Doubled

A proton consists of quarks which are.

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Two up, one down

One up, two down

All up

All down

The galvanometer can be made sensitive by making the factor BAN/C

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Large

Small

Constant

Zero

The unit of Rh is.

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ms-1

m

m²

m^-1

The charge number of Ba is.

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197

141

56

85

Lenz's law was given by Heinrich lenz in:

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1894

1904

1854

1834

The Lenz's law fulfils.

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Law of conservation of energy

Law of conservation of charge

Law of conservation of momentum

Kirchhoff's law

The unit of magnetic induction B is

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Coulomb

Ampere

Coulomb/ampere

Weber/m²

Antiparticle of electron is.

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proton

Photon

Positron

Neutron

When platinum is it becomes orange at.

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500^oC

900^oC

1100^oC

1300^oC

The motional emf depends upon the

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Length of conductor

Speed of conductor

Strength of magnet

All of these

Nuclear fission chain reaction is controlled by using.

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Cadmium rods

Iron rods

Platinum rods

Steel rods

The permeability of free space is measured in

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wb A/m

Am/wb

wb/Am

m/wbA

At high frequency the value of reactance of capacitor will be.

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Small

Zero

Large

Infinite

The force which is responsible for the breaking up of the radioactive element is.

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Weak nuclear force

Strong nuclear force

Electromagnetic force

Gravitational force

X_L=

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2πfL

1/2πfL

2πfL

fL/2π

The first laser was built by

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ArthursSchawalow

T.H.Maiman

Peter Sorokin

C.H.Townes

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