Question # 1

The slope of q-t curve at any instant of time gives.

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Voltage

Current

Charge

Botha a and b

The product of resistance and capacitanc eis.

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Velocity

Force

Acceleration

Time

In photovoltaic cell, current is directly proportional to.

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Wavelength of light

Intensity of light

Energy

Frequency of light

Presence of dielectric between two charges always.

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Reduces the electric force

Enhance the electric force

Does not effect electric force

Double the electric force

In LR circiut which one of the following statements is correct?

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L and R opposes each other

R value increases with frequency

The inductive reactance increases with frequency

The inductive reactance decreases with frequency

The mass of beta particle is equal to mass of.

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Protons

Electrons

Neutrons

Boron

We can find from de Broglie formula

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Wavelength

Amplitude

Speed of wave

Frequency of wave

The vector sum of electric force and magnetic force is called:

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Deflecting force

Lorentz force

Newton force

Faraday's force

If 13.6 eV energy is required to ionize the hydrogen atom, then the required energy to remove an electron from n=2 is:

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10.2 eV

0 eV

3.4 eV

6.8 eV

Mutual induction has a practical role in the performance of the.

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Radio choke

Transformers

A.C. Generator

D.C. Generator

The quantity of U in the naturally occurring uranium is.

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0.2%

0.3%

0.7%

0.4%

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

Lenz's law deals with

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Magnitude of emf

Direction emf

Direction of induced current

Resistance

At 0 K a piece of silicon is a

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Conductor

Semi-conductor

Insulator

All

In pure capacitor A.C. circuit, the current I and charge q are.

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In phase

Out of phase

Parallel to each other

None of above

A battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

Half life of radon gas is

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3.8 minutes

3.8 days

3.8 months

3.8 years

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

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