Question # 1

On what factor the internal energy of a thermodynamic system depend upon.

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History

State

Process

Surroundings

A negative magnification always means the the image is.

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Erect

Real

Virtual

Inverted

The term radius of gyration relates to.

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Moment of force

Moment of inertia

Law of gravitation

simple harmonic motion

Who introduced the concept that an atom posses quantized energy levels.

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Raman

Bohr

Newton

Fermi

The relation between work function and maximum energy of photo electrons was discovered by.

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Stefan

Marely

Einstein

Max. Planck

The SI unit of density is.

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kg m2

kg m-2

kg m-3

kg m2 s-2

A body of mass 2 kg attached to a spring is pulled to a distance of 4 cm What will be the value of spring constant K.

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490 N m-1

980 N m-1

1260 N m-1

1960- N m-1

The first measurement of the force between electric charges was made in.

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1684

1784

1864

1874

Which BJT configurations used for signal inversion.

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CE

CC

CB

BE

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

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Energy

Force

Velocity

Angular momentum

Who proposed the thermodynamic scale of temperature.

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Saadi carnot

Lord Kelvin

Sir james dewar

Gabriei fahrenheit

Which of the following gives discrete emission spectrum.

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Sun

Candle

Incandescent filament

Mercury vapour lamp

When current in an inductor is increasing

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energy is lost

Energy is being stored in the magnetic field of the inductor

Energy is being drained from the magnetic field of the inductor

Eddy current is produced

A charged particles moving in a magnetic field experiences a resultant force.

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Proportional to its K.E.

In the direction of the field

In the direction opposite to its motion

In the direction perpendicular to both the field and its motion

What would be the colour of sky through hour the day .If the earth has no atmosphere.

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Blue

Red

White

Black

Photo diodes are used as

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Optical fibre receivers

Automatic switching

Logic circuits

All of the above

Inertial mass and gravitational mass are

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Opposite

Proportional

Weights

Inversely proportional

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

A component of the spectrometer which consists of a fixed metallic tube with a coned lens at one end and an adjustable slit is called.

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Telescope

Collimator

Tumtable

Grating

The normal adjustment the magnifying power of an astronomical telescope is.

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fe/fo

fo/fe

fo+ fe

fo -fe

Object may acquire an excess or deficiency of charge by

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Rubbing them together

Grounding them

Applying coulomb's principle

Shielding them

When a ray of light is incident perpendicularly to the boundary of two media.

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It pass through without bending

It is speed is faster int he optically denser medium

It derivates from its original path

It is totally reflected back

Under which of the following conditions current in a circuit is wattles.

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When inductance in the circuit is zero

When resistance in the circuit is zero

When current is alternating

When resistance and inductance both are zero

Self inductances of solenoid is

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Directly proportional to the current flowing through the wire

Directly proportional to its length

Inversely proportional to area of corss section

Directly proportional to number of turns

The absorption of X-rays in a given material follows.

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A parabola path

Is straight line

An exponential curve

A circle

In scattering experiment which force scatters alpha particle.

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Nuclear force

Coulomb's force

Gravitational force

Centripetal force

Which of the following is the most massive particle.

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Deuteron

Alpha particle

Neutron

positron

On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.

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Target material

Accelerating voltage

Filament temperature

Separation between target and the filament

In a parallel resonant circuit, at resonance

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Current is maximum

Voltage is maximum

Impedance is minimum

Impedance is zero

A young man wearing glasses does not require bifocals because he

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Is farsighted

Has the ability to accommodate

Is short signed

Does not suffer from coma

Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.

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1 mA

100 mA

98 mA

110 mA

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