Question # 1

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

Recentaly a complex crystalline structure known as yttrium barium copper oxide (Yba₂Cu₃O₃) have reported to become super conductor at

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163 K

169 K

200 K

100 K

The emf induced by the motion of a conductor across a magnetic field is called:

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Motional emf

Rotational emf

Induced emf

All of above

The effective value of any sinusoidal alternating current or voltage is

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None of the above

The internal resistance of a capacitor is called:

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Impedance

Resistance

Reactance

Conductance

Charge on positron is:

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Negative

Positive

Netural

None of these

Curie temperature is

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Differen for chromium oxide and cobalt

Same for chromium oxide and cobalt

Same for iron and cobalt

None of these

The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:

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Neutral

Forward biased

Reversed biased

None of above

A semiconductor in its extremely pure form is known as:

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Intrinsic

Extrinsic

Both a and b

None of above

Electron vibrating 94,000 times each second will produce radio waves of frequency.

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94 Hz

940 HZ

94 Hz

490 Hz

EMF is induced due to change in

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Charge

Current

Magnetic flux

Electric field

Truth table of logic function.

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Summarize its output values only

Tabulates all its input conditions only

Display all its input and output possibility

Is not base on logic algebra

___ is correct relation.

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IT = 10^-4G

IT = 10⁴ G

IT = 10² G

IT = 10^-2 G

Boher proposed his atomic model in:

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1910

1911

1912

1913

If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be

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136.0 volt

3.0 volt

13.6 volt

None of these

Minimum energy needed to escape an electron ofrm metal surface is called:

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Threshold energy

Threshold frequency

Work function

Work ability

A rheostat can operate as.

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Amplifier

Potential divider

Oscillator

Transformer

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

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