Question # 1

In scattering experiment which force scatters alpha particle.

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Nuclear force

Coulomb's force

Gravitational force

Centripetal force

A transistor consists of.

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One p-n junction

Two p-n junctions

Three p-n junctions

Four p-n junction

In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.

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Radioactivity

Radioactivity dating

Nuclear fusion

Nuclear fission

A single quantum of electromagnetic radiation is termed as.

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Compton

Photon

Hyperon

Meson

Cs - 137 is a radioisotope used ot determine the thickness of the walls of steel pipes Cs 137 is chosen because it emits

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Radiowaves

Alpha particles

Beta particles

gama particles

Which six particles and their antiparticles interact by the weak interaction.

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Leptons

Hadrons

Muons

pi mesons

When using the formula E = h lambda what unit should energy have.

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Joule

Watt second

Newton metre

Electron volt

If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.

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Larger

Smaller

Zero

Infinity

Radio carbon in the atmosphere is produced by the bombardment of.

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Oxygen by high energy neutrons

Oxygen by high energy protons

Nitrogen by high energy protons

Nitrogen by high energy neutrons

The chemical behavior of an atom is determined by

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Mass number

Number of Isotopes

Atomic number

Binding energy

The average energy released per fission of U is about

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200 eV

2 keV

2 MeV

200 MeV

The rest mass of a particle is independent of the

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Wavelength of the particle

Mass of the particle

Speed of the particle

Energy of the particle

The input exultation for a JFET is

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Current signal

Voltage signal

Voltage and current signals

Neither voltage nor current signal

The converse of pair production is

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Annihilation of matter

Materialization

Compton effect

Photo electric effect

Nuclear force as compared to electrostatic force is.

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Weaker and long range

Weaker and short range

Stronger and longer range

Stronger and short range

Half life of a radioactive elements 10 minutes If the initial cont. rate is 368 counts per minute for what time count rate reaches 32 counts per minute.

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20 minutes

40 minutes

80 minutes

120 minutes

The division and germier experiment relates to

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Diffusion

interference

Polarization

Electron diffraction

Mosley's law establishes the X-rays fluorescence of target element with is.

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Atomic weight

Atomic number

Density

Lattice constant

The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.

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Zeeman's effect

Photoelectric effect

Compton's effect

Annihilation of matter

The half life of a radioactive element depends upon.

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Temperature

pressure

nature of element

quantity of the element

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