Question # 1

The quantity of U in the naturally occurring uranium is.

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0.2%

0.3%

0.7%

0.4%

The conductors having the conductivity of the order of

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Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?

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Young's modulus

Bulk modulus

Modulus of elasticity

None of these

X-rays were discovered by

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Curie

Henry Becquerel

Rontgen

None of these

A dot represents the direction of magnetic field.

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Out of page

Into the page

Tangent to page

Parallels to page

Charge on an electron was determined by

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Ampere

Millikan

Maxwell

Bohr

The emf induced by the motion of a conductor across a magnetic field is called:

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Motional emf

Rotational emf

Induced emf

All of above

The number of neutrons in Li are

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2

3

4

7

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

The direction of induced current is always so as to oppose the change which causes the current is:

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Faraday's law

Lenz's law

Ohm's law

Kirchhoff's 1st rule

Conversation of only one half of A.C. into D.C. is called.

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Half wave amplification

Wave amplification

Half wave electrification

Half wave rectification

The electrical intensity is equal to:

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-Δr/Δv

Δv/Δr

Δv/Δv

-Δv/Δr

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

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Maximum

Minimum

Zero

Infinite

The semi conductor diode has the property of

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Two way conduction

Zero conduction

One way conduction

Amplification

Antiparticle of electron is.

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proton

Photon

Positron

Neutron

A particles equal or greater in mass than of protons are called.

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Baryons

Leptons

Mesons

Quarks

NC-1 is the SI unit is

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Force

Charge

Current

Electric intensity

Photodiode is used for:

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Detection of current

Detection of heat

Detection of light

Both a & b

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