Question # 1

Logic gate can control some physical parameters like.

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Temperature, Pressure

Resistance, Inductance

Capacitance, Impedance

Current, voltage

If current flowing through a solenoid becomes four times, then magnetic field inside becomes.

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two times

three times

four times

Half

By increasing the temperature of conductor, the flow rate of charges.

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Increase

Remains constant

Decreases

Changes exponentially

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

Photodiode is used for:

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Detection of current

Detection of heat

Detection of light

Both a & b

Unit of self inductance is

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Weber

Tesla

Henry

Farad

The dead time of G.M tube is.

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10^-1 sec

10^-6sec

10^-4sec

10^-8sec

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?

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Young's modulus

Bulk modulus

Modulus of elasticity

None of these

The dimension of stress is

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[MLT^-1]

[ML^-1T]

[ML^-1T^-1]

[ML^-1T^-2]

The Compton effect is associated with

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X-rays

y-rays

Positive rays

ß-rays

Boher proposed his atomic model in:

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1910

1911

1912

1913

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

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1931

1731

1842

1831

The unit of resistance is:

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Ω

Ωm

Ω^-1m^-1

Ωm^-1

Electric power:

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Vx1

V²x1

V/1

V/1²

The photon with energy greater than 1.02 MeV can interact with matter as.

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Photoelectric effect

Compton effect

Pair production

annihilation of matter

The half life of radioactive elements depends upon

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Temperature

Nature of element

Amount of the radioactive substance

Pressure

The Si unit of Mutual inductance is:

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VA^-1S^-1

VAS^-1

VSA^-1

ASV^-1

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