Question # 1

In order to measure potential difference voltmeter is always connected in.

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Series

Parallel

Both a and b

Neither in series nor in parallel

When a motor is over loaded then the magnitude of back emf.

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Increases

Decreases

Remain constant

Zero

X -rays are similar in nature to.

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Gama rays

Beta rays

Alpha rays

Cathode rays

The building blocks of protons and neutrons are called.

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Ions

Electrons

Positrons

quarks

e.m.f is the conversion of --------------- energy into electrical energy

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Chemical

Solar

Light

None of these

X=A+B is the mathematical notation for.

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OR gate

NOR gate

NAND gate

AND gate

Subatomic particles are divided into groups.

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Photon

Laptons

Hadrons

All of these

The value of Rydberg constant is

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1.0974 x 10⁷ m^-1

1.0974 x 10^-7 m^-1

1.0974 x 10⁶ m^-1

1.0974 x 10^-6 m^-1

The device which is used as amplifier and works with the negative feedback is.

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Operational amplifier

P-n-p transistor

n-p-n transistor

Transistor

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

The electric field created by positive charge is:

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Radially outward

Circular

Radially inward

Zero

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

The physical quantity related to photon, that does not change in Compton scattering is.

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Energy

Speed

Frequency

Wavelength

A diode characteristics curve is a plot between

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Current and resistance

Voltage and time

Voltage and current

Current and time

The average gap for Germanium at 0K is

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1.12 ev

0.02 ev

6.72 ev

7.2 ev

A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:

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q=Q/4

q=Q/2

q=Q

None of these

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

Young's modulus for water's is

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Zero

1

2

3

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