Question # 1

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

The head produced by the passage of current through a resistor is.

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H= I²Rt

H = IR²t

H = 1/Rt

H = I²/Rt

The device which allows only the continuous flow of AC through it is.

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Inductor

Battery

Thermistor

Capacitor

Charge on an electron was determined by

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Ampere

Millikan

Maxwell

Bohr

The working principle of transformer is.

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Self induction

Faraday's law

Mutual induction

Electromagnetic induction

In a transistor, collector current is controlled by:

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Collector voltage

Base current

Collector resistance

All of the above

Galvanometer is sensitive when C/BAN is

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zero

Large

small

Negative

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

The SI unit of magnetic induction Tesla is equal to

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N-1 Am

NA m2

NA-1n2

NA-1m-1

In D.C. generator, split rings act as.

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Capacitor

Commutator

Resistor

Inductor

When back emf in motor is zero, it draws.

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Zero current

Minimum current

Maximum current

Steady current

The physical quantity related to photon, that does not change in Compton scattering is.

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Energy

Speed

Frequency

Wavelength

For step down transformer

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Ns>Np

Np > Ns

Ns = Np

Ns > > > Np

Charge on an atom is:

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Positive

Negative

Neutral

None of these

The mass spectrum of naturally occurring neon shows the most abundant isotope has atomic mass.

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19

20

21

22

The central region of a transistor is called.

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Emitter

Collector

Base

Neutral

Which is not true for X rays

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X rays are not defected by electric field

X rays are polarized

X rays consist of electromagnetic waves

X rays can be diffracted by grating

For non-ohmic devices, the graph between V and I is

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Not a straight line

A straight line

A curve

All of above

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