Question # 1

which can be used to distinguish between insulators and conductors:

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electricity

telescope

temperature

electroscope

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

Two switches attached in series work on which operation?

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AND operation

OR operation

NOT operation

NOR operation

How does sound travel from its source to your ear:

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By changes in air pressure

By vibration in wires or strings

By electromagnetic waves

By infrared waves

The standard group of bits in digital electronic is:

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5 bits

6 bits

7 bits

8 bits

Mathematical formula of electromotive force (e.m.f) is:

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E = W/Q

E = Q/W

E = WQ

E = W2Q

The end of solenoid from which lines of force emerge out is called:

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North pole

South pole

North and south pole

None of these

If the mass of a spring mass system is doubled, its time period becomes:

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√2 T

T/2

√T/2

T/√2

Frequency of tuning fork depends upon its …………. of prongs:

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Weight

Speed

Mass

Distance

At mean position of pendulum, the potential energy of the pendulum is:

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Maximum

Minimum

Much more

Both a and c

In case of OR and AND operation, if switches s₁ and s₂ both are open then lamp is:

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On

Off

Sometimes on and sometimes off

Neither on nor off

for which of following ampere second could be the unit:

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energy

current

charge

power

Example of mechanical waves is:

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Radio waves

X-rays

Light waves

Sound waves

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