Question # 1

The process by which nuclei emit a ,b and gama rays in order to attain stability is called.

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Radioactive disintegration

Radio activity

B decay

Radioactive transmulation

Which temperature is required for the fusion of two nuclides.

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10⁶ K

10⁷K

10⁸K

10 ⁹ K

The capture of neutron by a proton results in the formation of.

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Deuteron and gama rays

Deuteron and alpha particle

Triton and Beta particles

Tritron and X rays

White light a tungsten filament lamp is passed through sodium vapor and viewed through a diffraction gritting Which of the following best describes the spectrum which would be seen.

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Coloured lines on a black background

Coloured lines on a white background

Dark lines on a coloured background

Dark lines on a white background

The possible values of principal quantum number are.

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only zero

0,1,2,...................7

1,2,3........................8

2,3,4,6...............10

In heavy elements of the periodic table the number of neutrons than protons are.

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Lesser

Greater

Equal

Undetermined

The SI unit of equivalent dose is

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Seivert

Gray

Radian

Rem

The Compton effect in X-rays proves that

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Electrons have wave property

x-rays have wave properly

X-rays have particle characteristics

Electrons cannot exist

The energy delivered to the tissue per unit mass is called the absorbed dose of.

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X rays

gama rays

Radiation

energy

the alpha particle does not travel for enough in air.

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Due to its intense ionization

Due to its large mass

Due to its high charge

Due to its Hight Ionization

The value of open loop gain for the amplifier is

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zero

very low

very high

of an intermediate vaue

The SI unit of decay constant is.

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m

m-1

s-1

N m-1

Critical mass is the minimum mass needed for

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Fusion

H-Bomb

Chain reaction

Binding energy

The particles equal in mass or greater than protons are called.

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Mesons

Bosons

Baryons

Nucleons

How many terminals does a BJT have.

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1

2

3

4

In which of the following controlled nuclear chain reaction is used to liberate energy.

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Nuclear bomb

Atomic bomb

Hydrogen bomb

Nuclear reactor

Nuclear force exists between

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Proton proton

Neutron -neutron

neutron -proton

All of these

Deuterium is

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A transuranic element

A type o cosmic particle

An isotope of hydrogen

An isotope of helium

The critical mass of a fission reaction is.

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The mass to start a nuclear fission reaction

The minimum mass for chain reaction

The size of the reactor core

The size of fuel plus the size of moderator

the wavelength of continuous X-rays is inversely proportional to.

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Intensity of incident electron beam

Temperature of the target

Intensity of X-rays

The energy of electrons striking the target

One becquerel is equal to

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Decay of orie radioactive atoms per second

Decay of 10 radioactive atoms per secnd

Decay of 100 radioactive atoms per second

Decay of infinity radioactive atoms per second.

The path of electron in Rutherford atomic model according to classical theory a.

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Parabolic

Straight line

Spiral

Circular

Which of the following atom pair have the same structure.

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N, C

B, Li

H2 , Ne

Li , Na

A complete amplifier circuit made on a silicon chip and enclosed in a small capsule is

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Inductor

Metal detector

Diode

Operational amplifier

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