Question # 1

In a series resonant circuit, the current at resonance is.

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Maximum

Minimum

Zero

Sometimes maximum and sometimes minimum

Pitch of the sound determines

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Its shrillness

Loudness of sund

Intensity level

Quality of sound

If gravitational field is not uniform over the extended object or system of point masses the centre of mass and centreof gravity will

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Be antiparallel

Not coincide

Coincide

Be perpendicular

Which vector can be used to locate the centre of mass of a collection of particles.

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Null vector

Unit vector

Position vector

Distance vector

In L-C parallel circuit the capacitor draws a

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Lagging current

Leading current

Lagging voltage

Leading voltage

When light enters glass from air it suffers a change in.

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Wavelength

Wave front

Velocity

All of these

Current per unit area is called.

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Electric potential

Current density

Charge density

Electric intensity

The continuous X rays spectrum is due to an effect.

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Bremsstrahlung

Breaking radiation

Holography

both a and b

What is the period of geostationary satellite.

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6 hours

12 hours

18 hours

24 hours

Which quantity is common for systems in thermal equilibrium.

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Heat

Temperature

Momentum

Specific heat

On which parameter internal energy of an ideal gas depends upon.

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Volume

Mass

Pressure

Temperature

Lenses of what diameter are usually not practical.

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Less than 1 m

Larger than 1m

Larger than 5 m

Larger than 10 m

The work done in moving a body from one place to another in a gravitational field is independent of the

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applied force

Force of gravity

Path followed by the body

Force of earth

When the temperature of a body is equal to that of the surrounding then the body appears

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Dull black

Red hot

In thermal equilibrium

To be cold

A resistance is a device which

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Acids the flow of current is a circuit

Converts electrical energy to heat

Is a type of charge pump

Is like a switch

Which one of the following scientists got Noble prize due to his work of combining two basic forces of nature.

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Dr. Abdul Qadeer khan

Dr. Abdul Salam

Dr. Muhammad ishfaq

Dr. Mubarak mund

What type of process is the Carnot's cycle.

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Reversible

Irreversible

Neither reversible nor irreversible

May be reversible or irreversible

Angular momentum of a body under a central force is

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Zero

Maximum

Minimum

Constant

Which of the following material could be used for a high vacuum, high voltage tube.

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Thoriated tungsten

Tungsten

Copper

Cesium

The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.

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The photoelectric effect

The zeeman effect

The Compton effect

Quantum effect

A force of 50 N acts on a body for 10 s What will be change in momentum.

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5 Ns

500 Ns

200 Ns

800 N s

The branch of medicine which deals with the anatomy physiology and diseases of the eye

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Ophthalmology

Radiology

Cardiology

Andrology

The process in which a system undergoes a change of state at constant volume.

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Isobaric process

Isochoric process

Isothermal process

Adiabatic process

In electronegative waves the electric and magnetic fields are.

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Parallel to each other

Perpendicular to each other

antiparallel to each other

At an angle of 45 ^o to each other

The process of mixing sound waves with carrier waves is known as.

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Rectification

amplification

Modulation

Demodulation

Which of the following are examples of transverse and a longitudinal wave.

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Radio and sound waves

Radio and light waves

Light and water ripples

Light and sound waves

Parallel rays of light are focused by a thin convex lens.A thin concave lens of the name focal length is then joinjed to the convex lens The focal point will.

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Shift to infinity

shift towards the lens by a small distance

shift away from he lens by a small distance

Remain at its original position

The relation between angle of incidence and angle of refraction is known as.

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Snell's law

Refractive index

Index of refraction

All of the above

In the experiment of production of X rays electrons are accelerated towards the anode by

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Thermionic emission

Potential difference

Breaking potential

Cut of current

Supplementary units radian and steradian were established for

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Density

Viscosity

electric intensity

Geometrical quantities

The bunding energy per nucleon for iron is.

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zero

Maximum

Negative

Minimum

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