Question # 1

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

The scientist who suggested the presence of neutron was:

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Bohr

Rutherford

Chadwick

J.J Thomson

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

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Maximum

Minimum

Zero

Negative

The phase difference between the current and voltage at resonce is:

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0

π

-π

π/2

Phase difference between V and I of an A.C through resistor is.

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Zero Degree

90 ^o

80^o

120^o

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

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2

4

6

8

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

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90^o

270^o

0^o

180^o

A wire uniform cross-section. A length L and resistance R is cut into two equal parts. The resistivity of each part will be:

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Doubled

Halved

Remain the same

One fourth

One of the applications of electrostatic induction is

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Laser

Photocopier

X ray machine

Wilson cloud chamber

Commentator was invented by

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Henry

Ousted

Maxwell

William sturgeon

The most abundant isotope of neon is:

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Neon 21

Neon 20

Neon 22

None of above

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be

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136.0 volt

3.0 volt

13.6 volt

None of these

Which of the following is one of the spectral series of atomic hydrogen?

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Brockett series

Balmer series

P fund series

All of above

In Millikan's oil drop experiment a charged particle of mass 'm' is in equilibrium in an will

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Zero

g/2

g

2g

The photo copying process is called

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Xerography

Inkjet Printer

Both (a) and (b)

None of these

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