Question # 1

In Compton's effect the change in wavelength of a scattered photon is called.

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Angle of emergence

Angle of refraction

Angle of deviation

Compton shift

The continuous X rays spectrum is due to an effect.

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Bremsstrahlung

Breaking radiation

Holography

both a and b

An Alpha particle is the same as

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A helium nucleus

A high speed electron

A hydrogen nucleus

Electromagnetic radiation of short wavelength

Which of the following configuration of BJTs gives both voltage gain and current gain.

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common Base

Common Emtter

Common collector

All of the above

The output of two input OR gate is zero only when its.

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Either input is one

Either input is zero

Both inputs are zero

Both inputs are one

The SI unit of equivalent dose is

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Seivert

Gray

Radian

Rem

Marie Curie and Pierre Curie discovered two new radioactive elements which are.

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Uranium and radkum

Platinum and radium

Polonium and radium

Crypton and radon

Compton scattering experiment seemed to indicate that radiation had

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Wave nature

Particle nature

Wave particle nature

X-rays nature

What is the effect of electric and magnetic fields on X-rays

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X-rays are deflected

X-rays are not deflected

X-rays are sometimes deflected and sometimes not

Nothing can be said

Which of the following circuits is used as local oscillator in radio receivers.

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AF oscillator

Phase Local Loop

RF oscillator

All of the above

Which of the following are particle accelerators.

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Cyclotrons

Synchrotrons

Linear accelerators

All of the above

Which temperature is required for the fusion of two nuclides.

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10⁶ K

10⁷K

10⁸K

10 ⁹ K

The electrons behave as waves, because they can .

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Produce ions in gases

Diffracted by a crystal

Be deflected by electric fields

Be deflected by magnetic fields

When Be is bombarded by alpha particles, then we obtain

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electron

Proton

Positron

Neutron

x-rays cannot produce

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Photoelectron

Compton electron

Electron positron pair

All of these

Which of the following is deflected by an electric field.

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Alpha particles

X rays

Gama rays

Neutrons

Which of the following wavelength lies in X-rays region.

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1 A

100 A

1,000 A

10,000 A

The mass of proton is equal to.

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1.673 x 10^-27 kg

1.673 x 10²⁷ kg

9.1 x 10-31 kg

9.1 x 10³¹ kg

The constant lamda is called the.

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Decay constant

Gas constant

Planck's constant

Dose constant

Which one of the following is a neutron absorber

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Pb

Cd

Cu

Ag

A body moves with velocity of 2 x 10⁶ m s-1 its relativistic mass becomes

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Zero

Unity

Double of its rest mass

Infinity

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