Question # 1

Energy released by conversion of 1 amu is

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200 MeV

931 MeV

233 MeV

243 MeV

The radioactive decay obeys the law

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When a PN-Junction is reverse biased the depletion region is.

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Widened

Narrowed

Normal

None of these

The number of electrons in one coulomb charge is equal to

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6.2 x 10¹⁸ electrons

Zero electrons

1.6 x 10^-22 electrons

6.2 x 10²¹ electrons

Binding energy per nucleus for uranium is above:

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6.7 Mev

7.7 Mev

6.9 MeV

7.9 MeV

Output resistance of an op amp is

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High

Low

Zero

Equal to input resistance

Most of the electrons in the base of an NPN transistor flow:

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Out of the base lead

Into the collector

Into the emit

Into the base supply

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

The magnetic flux will be max, For an angle of:

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0°

60°

90°

180°

Eddy current is one cause energy loss in

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A.C. generator

Transformer

D.C. motor

D.C. generator

Nuclear fission was discovered by:

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Otto Hahn

Friz strassmann

Both a and b

Michaelson

Frequency of x-rays depends upon.

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Number of electrons striking target

Accelerating potencial

Nature of the target

Both B and C

The particles which do not experience strong force are called.

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Baryons

Hadrons

Mesons

Laptons

The highest value reached by the voltage or current in one cycle is called.

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Peak ot peak value

Peak value

Instantaneous value

Root mean square value

1 rem =

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0.001 SV

0.01 SV

0.1 SV

1.01 SV

The resistivity of --------------------decrease with the increase in temp

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Gold

Silver

Copper

Silicon

Which is not fundamental logic gate.

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NOT

AND

OR

NAND

1 tesla =

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1 MAm^-1

1NA^-1m

1NA^-1m^-1

None of above

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