Question # 1

Two parrallel, metal plates are a distance 8.00 m apart. The electric field between the plates in uniform, Directed toward the right , and has a magnitude of 4.00 N/C. If an ion of charge +2e is released at rest at the left-hand plate. What is its kinetic energy when reaches the right-hand plate?

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4 eV

64 eV

32 eV

16 eV

Which of the following series of hydrogen spectrum lies in ultra violet region.

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Lyman sereis

Paschen series

Balmar series

Bracket series

Electromagnetic induction is exactly according to law of:

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Momentum

Charge

Energy

Mass

Drum of photocopier is made of.

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Copper

Aluminum

Nickel

Cobalt

When transistor are used in digital circuits they usually operate in the :

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Active region

Break down region

Saturation & cutoff regions

Linear region

Earth orbital speed is.

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10 km/s

20 km/s

30 km/s

40 km/s

Which of the following basic force is able to provide an attraction between two neutrons:

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Electrostatic and nuclear b

Electrostatic and gravitational

Gravitational and strong nuclear

Only nuclear force

The activity of radioactive sample

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Is constant

Increases with time

Decreases linearly with time

Decreases exponentially with time

_______ is the building block of every electronic circuit.

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Semi conductor diode

Resistor

Capacitor

Amplifier

The mean value of A.C. in a cycle is.

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1

0

I2

Nil

The circuit which compares the two voltages is.

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LDR

Sensor

Comparator

Logic gate

Radius of first Bohr's orbit is.

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0.053 nm

0.053 mm

0.053 micro meter

0.053 m

The product of resistance and capacitanc eis.

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Velocity

Force

Acceleration

Time

Wave nature of light appears in

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Pair production

Compton effect

Photo electric

Interference

Grid in cathode ray oscilloscope controls.

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Number of electron

Temperature of filament

Frequency of electron

Energy of electrons

NC-1 is the SI unit is

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Force

Charge

Current

Electric intensity

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

Force on a charged particle is zero when projected at angle with magnetic field.

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0 ^o

90^o

180^o

270^o

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