Question # 1

The rest mass x ray photon is

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Infinite

Zero

1.67 X^-17 kg

All of the above

In carbon resistors, then value of Blue colour is.

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6

7

8

9

Young's modulus for water's is

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Zero

1

2

3

The reciprocal of decay construct lamda of a radioactive element is.

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Half life

Mean life

Curie

total life

Efficiency of transformer does not affected by

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Input voltage

Core of transformer

Insulation between sheet

Resistance of coils

The unit of permiability of free space is:

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T.m/A

T.m²/A

T.m/A²

None of these

Who explained the photo electric effect.

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Max Plank

Einstein

Henry

Rutherford

_______ is the building block of every electronic circuit.

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Semi conductor diode

Resistor

Capacitor

Amplifier

split rings are used in

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A.C. generator

A.C. motor

Transformer

D.C. motor

Which one of the following paved the way for modern physics

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Newtonian mechanics

Theory of relativity

Quantum theory

All of above

The term invertor is used for.

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NOR gate

XNOR gate

NAND gate

NOT gate

Kirchhoff's voltage rule is a way of stating conservation of.

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Mass

Charge

Energy

Momentum

If the distance between two charges is halved and charges are also doubled, then force between them will be.

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Two time

Four time

Eight time

Sixteen time

Vrms =

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0.7V_∘

0.07V_∘

0.007V_∘

0.75V_∘

The first theory about the structure of an atom was introduced by

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Neil Bohr

Einstein

Compton

Rutherford

For an atom of hydrogen atom the radius of the first orbit is given by:

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H/me²

me/4h²

h2/4π² kme²

h² me²

A° is the unit of:

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Energy

Length

Nuclear energy

Work

Anti particle of electron is

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Proton

Photon

Neutron

Positron

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