Question # 1

1 rem =

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0.001 SV

0.01 SV

0.1 SV

1.01 SV

Brightness of screen of CRO controlled by

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Grid

Filament

Anode

Cathode

At resonance frequency, the impedance of RLC series circuit is.

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Maximum

Minimum

Zero

Infinite

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

The device which are required to convert various physical quantities into electric voltage are called.

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Filters

Rectifiers

Amplifiers

Sensors

Self inductance of a long solenoid is given by

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None of the above

All motions are

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Absolute

Uniform

Relative

Variable

A certain wire has a resistance R, the resistivity of an other wire of an identical material with the first, except for twice its diameter is.

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1/4 R

4R

2R

Same as R

The jerks in D.C. motor are created by the use of.

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Armature

Commutators

Split rings

Source of emf

Application of wave like nature of particle is

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Photodiode

Optical microscope

Electron microscope

Compound microscope

Binding energy per nucleus for uranium is above:

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6.7 Mev

7.7 Mev

6.9 MeV

7.9 MeV

Binding energy per nucleon is maximum for

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Platinum

Iron

Uranium

Lead

When motor is just started, back emf is almost.

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Maximum

Zero

Minimum

Infinite

The unit of temperature co efficient of resistivity is.

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Ohm -m

K-1

K

Ohm

If the following particle have the same energy, which particle has the shortest wave length.

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alpha particle

Neutron

Beta particle

Proton

A force of 0.01 N is exerted on a charge 1.2 x 10^-5 C at a certain point. The electric field at that point is

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1.2 x 10⁴ N/C

1.2 x 10⁴ C/N

8.3 x 10² N/C

8.3 x 10^-2 N/C

Presence of dielectric between two charges always.

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Reduces the electric force

Enhance the electric force

Does not effect electric force

Double the electric force

The electric intensity at infinite distance from the point charge is

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Infinite

Zero

Positive

Negative

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