Question # 1

NIBA =

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cθ

θ/c

c²θ

c²/θ

When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be.

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Photoelectric effect

Compton effect

Pair production

Annihilation of matter

Example of ductile substance is.

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Glass

Wood

Lead

Oxygen

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

Some charge is being given to a conductor. Then its potencial

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Its maximum at surface

Its maximum at Its maximum at center

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

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

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

The radioactive decay obeys the law

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The AC system is preferred to DC system because:

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AC voltage can be easily changed in magnitude

DC motor angular velocity is affected badly

High voltage AC transmission is less efficient

Domestic appliance require AC voltage for their operation

Resistivity at a given temperature depends upon.

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Area of cross section

Length

Nature of material of conductor

Both length and area

The highest value reached by the voltage or current in one cycle is called.

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Peak ot peak value

Peak value

Instantaneous value

Root mean square value

Bremsstrahlung radiation are examples of

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Atomic spectra

Molecular spectra

Continuous spectra

Discrete spectra

The acceleration of an electron of mass m and charge e, moving with uniform speed v at right angles to a magnetic field of flux density B, is given by

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Bevm

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

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50 Hz

25Hz

100 Hz

75 Hz

1 kg mass will be equivalent to energy.

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9 x 10⁸ J

9 X 10¹² J

9 X 10¹⁶ J

9 X 10¹⁹ J

The working principle of transformer is.

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Self induction

Faraday's law

Mutual induction

Electromagnetic induction

Electric field intensity at a point is defined by the relation.

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E= q/F

E = F/q

E = qF

E = F/q2

Transformer is used to change

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Electric power

Magnetic field

Alternating voltage

Phase of A.C.

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