Question # 1

The output of two input is zero only when its.

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Both inputs are zero

Either input is zero

Both inputs are one

Either input is one

The radio active nuclide ₈₆Ra²²⁸ decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is:

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₆₄X²²⁰

₈₆X²²²

₈₄X²¹⁶

₈₈X²¹⁵

1 amu is equal to

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1.0606 x 10^-27 kg

1.66 x 10^-31 kg

1.66 x 10^-34 kg

1.66 x 10^-19 kg

Energy needed to produce an electron hole in solid state detector is.

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1 to 2 eV

3 to 4 eV

6 to 7 eV

8 to 9 eV

The unit of Rh is.

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ms-1

m

m²

m^-1

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

Efficiency of transformer does not affected by

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Input voltage

Core of transformer

Insulation between sheet

Resistance of coils

the substances in which the atoms do not form magnetic dipoles are called.

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Diamagnetic

Para magnetic

Ferro magnetic

Crystal

The binding energy for_________ is maximum.

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Copper

Glass

Iron

Aluminum

Anti particle of electron is

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Proton

Photon

Neutron

Positron

If the medium between the charges is not free space then electrostatic force will.be

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Increase

Decrease

Remain same

None of these

The effective value of any sinusoidal alternating current or voltage is

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None of the above

The conductor experience force, placed in magnetic above:

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Move towards weaker part of field

Move towards stronger part of field

Remains at rest

Move upwards in space

The negative sign with induced emf in Faraday's law is in accordance with

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Lenz's law

Amperes law

Boyle's law

Gauss law

The sensitivity of Galvanometer can be increased by:

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Increasing C/BAN factor

Decreasing C/BAN factor

Increasing angle θ

All of above

A capacitor is perfectly insulator for:

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Direct current

Alternating current

Direct as well as alternating current

None of these

X₁is low for low frequency Fy but Xc is.

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Zero

Low

High

Same is H

If 10 A current passes through 100 mH inductor, then energy stored is.

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100 J

5 J

20 J

Zero

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