Question # 1

I amu =

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9.31 MeV

931 MeV

9.031 MeV

None of above

Which of the following are not hadrons.

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Muons

Mesons

Positrons

Neutrons

Yield stress is another name of

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Plasticity

Proportional limit

Elastic limit

Both (b) and (c)

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

Metals are good conductors of electricity because they have

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Large number of bounded electrons

Small number of electrons

Large number of free electrons

Small number of free electrons

For Holography we use

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X ray

Laser

gama rays

Beta rays

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, Then

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The charge in the plates reduces and potencial difference increase

Potencial difference between the plates increase, stored energy decreases and charge remains the same

Potencial difference between the plates decreases, stored energy decreases and charge remains unchanged

None of them

Electron volt is unit of:

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Chemical energy

Potential energy

Nuclear energy

heat energy

The minimum frequency needed to emit an electron form metal surface is called:

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Work function

Threshold frequency

Quanta frequency

All of above

If an electron is prijected in a magnetic field with velocity V, it will experience a force

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Photo electrons are emitted y using visible light when the metal is.

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sodium

Copper

Nicked

Cobalt

Einstein photoelectric equation is

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None of these

The energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

The symbol of p-n-p transistor is

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when an inductor comes close to a metallic object, its inductance is.

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Decreased

Increased

Becomes half

Becomes 4 times

Wave nature of light appears in

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Pair production

Compton effect

Photo electric

Interference

A real transformer does not change.

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Voltage level

Current level

Power level

Frequency

The movement of conductor in magnetic field produces electrical current was discovered in:

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1931

1731

1842

1831

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