Question # 1

The internal resistance of a capacitor is called:

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Impedance

Resistance

Reactance

Conductance

If I_o is the peak value of current, then its root mean square value is given by

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2 I_o

I_o

0.7 I_o

Energy of Black body radiation depends upon

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Nature of surface of body

Nature of material of body

Shape and size of body

Temperature of the body

The brightness of the spot of CRO screen is controlled by.

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Anode

Cathode

Grid

Deflecting plates

At resonance frequency, the impedance of RLC series circuit is.

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Maximum

Minimum

Zero

Infinite

Rutherford performed on experiment on a nuclear reaction in:

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1921

1981

1927

1932

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

A photo diode can turn its current ON and OFF in

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Micro seconds

Mega seconds

Nano seconds

Mili seconds

Which is not true for X rays

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X rays are not defected by electric field

X rays are polarized

X rays consist of electromagnetic waves

X rays can be diffracted by grating

The mass spectrum of naturally occurring neon, showing

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1 isotope

2 isotope

3 isotope

4 isotope

Iodine -131 is used for the treatment by

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Bones

Eyes

thyroid glands

Lungs

In photocopier, then drum is coated with layer of.

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Aluminium

Copper

Selenium

silver

Radio frequency choke is

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Iron cored

Air Cored

Air as well as iron cored

None of these

Drum of photocopier is made of.

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Copper

Aluminum

Nickel

Cobalt

The uncertainty principle was given by

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De-Broglie

Heisenberg

Einstein

Max Planck

Lenz's law was given by Heinrich lenz in:

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1894

1904

1854

1834

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

Vrms =

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0.7V_∘

0.07V_∘

0.007V_∘

0.75V_∘

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