Question # 1

The continuous X rays spectrum is due to an effect.

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Bremsstrahlung

Breaking radiation

Holography

both a and b

The force that bonds protons and neutrons together int he nucleus despite the electrical repulsion of the protons is called.

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Molecular force

Nuclear force

Atomic force

Gravitational force

The unit Planck's constant is equivalent to that of.

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Energy

Force

Velocity

Angular momentum

Specially designed solid state detector can be used to detect.

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Alpha particles

Beta particles

Gama rays

X- rays

The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.

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Pair production

Pair annihilations

Photoelectric effect

Compton's effect

The reciprocal of decay constant lamda of a radioactive substances is equal to.

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total life

Half life

Mean life

Curie

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

X-ray are

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Streams of negatively charted particles.

Electromagnetic wave

Streams of positively charged particles

Visible light

The X-rays coming from a X-rays tube

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Is monochromatic

Has all wavelengths smaller than a certain maximum wavelength

Has all wavelengths greater than a certain maximum wavelength

has all wavelengths minimum than a certain maximum wavelength

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

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Atomic nuclei may contain neutrons

Atoms are electrically neutral

Atoms are largely empty space

Atoms have positively charged nuclei

What is the scale for measurement of Banbridge mass spectrograph.

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Linear

Inverse

Exponential

Logarithmic

When an electron and a positron are annihilated, then number of protons produced is.

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1

2

3

4

Which Isotopes is use din radioactive dating.

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C¹²

C¹³

C¹⁴

C¹⁶

Why FET amplifiers are called voltage controlled devices.

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Input is a current signal

Output is a current signal

Input is a voltage signal

Output is a voltage signal

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

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Attraction of nucleus

Collision with nuclei

Interactions with electrons

Electrostatic repulsion by the nucleus

The maximum K.E. with which photoelectrons are emitted depends very strongly on the.

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Intensity of incident light

Electric field near the photocathode

Frequency of incident light

Polarization of incident light

Most widely used types of gas LASER are

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Neon

Argon ion

Helium

All of these

Special theory of relativity deals with the events in the frames of reference which move with constant.

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Time interval

Acceleration

Momentum

space interval

The working of cloud chamber is based in the presence of.

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Super heated vapours

Liquid

Super saturated vapors

Unsaturated vapours

What is the relativistic version of the Schrodinger equation.

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Klein Gordon equation

Laplace equation

Quadratic equation

Binomial equation.

Which circuit elements has two stable states and can be used to store information.

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Flip flop or latch

Logic gate

Oscillator

Amplifier

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