Question # 1

Lines of force are imaginary lines drawn so as to be energy point.

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parallel to equipotential surface

Normal to the electric field

Indicative of the position of the nearest source charge

Tangent to the electric field

Isotopes are the atoms of the same elements which contain equal number of.

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Nucleus

Neutrons

Protons

Electrons

Artificial radioactivity was discovered by

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Rontgen

Becquered

Rutherford

Marie Curie and Pierre Curie

Maximum number of orders available with a grating is.

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Independent of grating element

Directly proportional to grating element

Inversely proportional to grating element

Directly proportional to wavelength

When a tennis balls is hit by a racket inasmuch a way that it spins as well as moves forward the velocity of the air on one side of the ball

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Increases

Decreases

Remain constant

Become zero

The magnetic induction is also called the

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Magnetic intensity

Magnetic flux

Magnetic flux density

Magnetic magnetization

A system of the equal and opposite point charges separated by a small distance is called.

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A capacitor

A dipole

An iinductor

A di electric

A fixed pulley is emplyed to

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Do some work

Change the directionof force

Do more work with the same force but without using the pulling

Have mechanical advantage greater than 1

A well known example of an intrinsic semi conductors is.

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Germanium

Phosphorus

Cobalt

Aluminium

With which factor disputative power of a grating increases.

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Order of spectrum

Number of lines per centimeter

Order and number of lines per centimeter

Shape of the grating

Which is the famous standard model of the universe.

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the big bang

Casmos

Astronaut

The small stap

Which of the following is electromagnetic wave.

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X rays

Micro waves

Light

All of these

The primary purpose of using a large aperture objective in a telescope is to produce

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Brighter image

Larger image

Wider field of view

Smaller image

When a force is applied on a body several effects are possible which of the following effect could not occur.

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The body speeds up

The body changes direction

The pressure on the body increases

The mass of the body decreases

Which kind of thermodynamic process is defined as with no heat transfer into or out of a system i.e. Q =0

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Isobaric process

Isochoric process

Isothermal process

Adiabatic process

Which one of the following is a neutron absorber

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Pb

Cd

Cu

Ag

The chain reaction is controlled by a series of rods usually made of.

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uranium

Cadimium

Boron

Steel

Which one of the following cannot be polarized.

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Radiowave

Ultraviolet rays

X- rays

Sound waves

Supplementary units radian and steradian were established for

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Density

Viscosity

electric intensity

Geometrical quantities

When of the following colours scatters minimum.

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Blue

Violet

Yellow

Red

The special theory of relativity was presented in 1905 by

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Young

Planck

Schrodinger

Einstein

The electromagnetic waves propagated outing space from antenna of a transmitter are known as.

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Infrared waves

Light waves

Radio waves

X-rays

A monochromatic light beam when passed through a prism is.

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Diffracted

Devlated

Polarized

Dispersed

Light entering glass will not suffer change in

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Wavelength

Direction

Velocity

Frequency

If the gas pressure is increased then its mean free path becomes.

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More

Zero

Infinite

Less

An alternating current can be produced by

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Turbine

Electric motor

Generator

Trnasormer

When wind blows in the same direction in which the sound travels, the sound velocity

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Decreases

Increases

Remains unchanged

Becomes zero

An important application of the semi conductor is the

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Vacuum tube

Fluroescent tube

Copper oxide rectifier

Battery

How solid hydrogen is obtained.

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By cascade process

By joule kelvin effect

By adiabatic expansion

Lowering temperature below melting point

x-rays can cause fluorescence in materials such as

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Cadmium

Zinc sulphide

Palatinocyanide

All of these

Which of the following is the ideal gas equation.

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PV -n RT

P/V = n RT

V/P = nR/T

PV = T/nR

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