Question # 1

The number of neutron present in a nucleus in a given by

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N = A+Z

N = A- z

N = Z - A

N = A X Z

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

Photons emitted in inner shell transition are.

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Continuous X -rays

Discontinuous X rays

Characteristic X rays

Energetic X rays

For rectification we use.

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Transformer

Diode

Choke

Generator

Maximum Compton shift is observed at.

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30^oC

90^oC

45^oC

180^oC

In an N-type silicon, which of the following statement is true?

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Electrons are majority carriers & trivalent atoms are the dopants

Electrons are majority carriers & pentavalent atoms are the dopants

Holes are minority carriers & pentavalent atoms are the dopants.

Holes are minority carriers & trivavalent atoms are the dopants.

The value of Wien's constant:

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2.9x10^-3mk

2.19x10^-7mk

3.18 x10⁶ km^-1

6.21 x 10^-9m²wk³

Two down and one up quarks make

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Proton

Neutron

~~photon~~

Positron

To convert a galvanometer into an ammeter, we connect with it a

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Shunt resistance

Low value parallel

Low value by pass resistor

All of above

One ohm is equal to

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VC-1

CV-1

AC-1

VA^-1

The sum of electric and magnetic force is called.

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Maxwell force

Lorentz force

Newton's force

Centripetal force

Internal frame is a frame is which

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1st law holds

2nd law holds

3rd law holds

Kelvin's law holds

The vessel containing the tow electrodes and liquid to known as.

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Chemical cell

Volt cell

Volta cell

Volta meter

Which pair belongs to hadrons.

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Protons and Neutrons

Neutrons and electrons

Photons and electrons

positrons and electrons

The internal resistance of a capacitor is called:

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Impedance

Resistance

Reactance

Conductance

In modulation, low frequency signal is known as

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Carrier wave

fluctuated signal

Modulated carrier signal

Modulation signal

If the potential difference across two plates of capacitor is doubled, then energy stored in it will be.

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Two times

Eight times

Four times

Remain same

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Wien's constant

Planck's constant

Davison constant

Lumber's constant

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