Question # 1

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

Energy produced due to fission of uranium atom is:

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500MeV

200MeV

700MeV

750MEV

The typical nuclei are less than:

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10^-16m

10^-14m

10^-12m

10^-10m

One henry is equal to

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1 ohm x 1 sec

1 ohm x 1 hertz

1 ohm x 1 metre

All of above

If magnetic field is doubled then magnetic energy density becomes.

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Four times

Two times

Three times

Six times

Two opposite point charge of same magnitude separated by distance 2d, electric potential mid way between them is.

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1 V

2 V

Zero

V/2

The half life of radioactive elements depends upon

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Temperature

Nature of element

Amount of the radioactive substance

Pressure

Which one is not a crystalline solid.

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Zinc

Copper

Nylon

None of these

_____ has the largest de Broglie wavelength at same speed.

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Proton

Alpha particle

Carbon atom

Electron

Radius of first Bohr's orbit is.

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0.053 nm

0.053 mm

0.053 micro meter

0.053 m

Which one of the following is not affected by electric or magnetic field.

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Beta rays

Gama ryas

Alpha rays

Electron

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

The temperature at which, semiconductor behaves as insulators:

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10k

0k

237k

None of above

If the coil is wound on iron core, the flux through it.

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Decreases

Becomes zero

Increases

Remains constant

The building blocks of protons and neutrons are called.

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Ions

Electrons

Positrons

quarks

Tolerance of "Gold" band.

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±10%

±5%

±15%

±20%

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

Both Xenon and cesium have

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33 isotopes

34 Isotopes

36 Isotopes

35 Isotopes

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