Question # 1

In RLC circuit the energy is dissipated in

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R only

R and L

R and C

L and C

When a nucleus emits alpha particle its atomic mass decreases by

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1

2

3

4

Which one has greater cone of impurity among all:

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Emitter

Base

Collector

All are pure

Number of electros emitted in photo electric effect depend upon.

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Intensity of incident light

Frequency of incident light

Energy of incident light

Wavelength of incident of light

Which is not characteristic of Laser.

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Monochromatic

Coherent

Intense

Multi direction

NAND gate represented by:

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X = A. B

X = A+B

X= A.B

X=|A+B|

Closeness of the electric field lines is the measure of.

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Direction of field

Strength of field

Potential difference

Uniformity of field

The Unit of decay constant.

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Second

(second)-1

m-1

mk

A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is.

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0.1 J

10 J

100 J

1000 J

A current carrying conductor experience maximum magnetic force in a uniform magnetic field when it is placed.

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Perpendicular to field

Parallel to field

At an angle of 60 ^o to the field

None of these

A moving charge is surrounded by:

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2 Fields

3 Fields

4 Fields

None of these

Main reason for world wide use of A.C. is

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It is cheaper

Transmitted

Botha a and b

Reaches in short time

The main use of A.C is

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Minimum line losses

Long distance transmission

Stepping up to required voltage only

Steeping down to required voltage only

In frequency modulation, the amplitude of carrier waves is

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Increases

Remains constant

Decreases

None of these

Which is not fundamental logic gate.

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NOT

AND

OR

NAND

The X-rays diffraction with crystal was first studied by

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W.H Bragg

W.L. Bragg

Michelson

None of these

Base of transistor is of order:

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10^-11m

10⁶m

10^-8m

10^-6m

The current through a resistance of 100 Ohm when connecting across a source of 220 V is.

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22000 A

22 A

2.2 A

0.45 A

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