Question # 1

Which of the following describes that the time interval between two events may be different in different of references

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Simullaneously

Time dilation

Length contraction

Mass variation

A body is termed as perfectly elastic if.

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It can move freely

Its surface is perfectly somooth

It is not affected by an external force

It recovers the original shape when the deforming force is remover

Force acting on a test charge between the plates of a parallel plate capacitor is F. If one of the plates is removed teh force on the same test charge will be.

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Zero

F/2

F

2 F

LASER beam can be used to generate three dimensional images objects in the process called.

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Tomography

Holography

Autography

Biography

In an oscillating system damping means reduction in

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Frequency

Wavelength

Amplitude

Period

A man in an elevator descending with an acceleration will conclude that his weight has

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Increased

Decreased

Constant value

Zero value

What will be the effect on the speed of a Transerv wave in a string. If tension is made 4 times.

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Remains the same

Increase a times

Becomes double

Becomes 3 times

How the small bulbs used for decoration purposes are connected.

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In parallel

In series

In mixed order

In vertical position

A body is said to be in complete equilibiurm when

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It attains translational equilibrium

Vector sum of all the forces is zero

Vector sum of all the torques is zero

Vector sum of all the torque and forces is zero

In order to reduce uncertainty in momentum one must use light of.

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Short wavelength

Large wavelength

Wavelength of intermediate value

Wavelength of any value

The heat frequency is the

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Sum of the two frequenceis

Produce of the two frequency

Difference of the two frequencies

Ratio of the two frequencies

The coulomb's law is valid for the charges which are.

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Moving and point charges

Moving and non point charges

Stationary and point charges

Stationary and large size charges

Beta decay may occur by

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Beta minus

Beta Plus

Electron capture

All of these

Which electrical component uses a low current circuit to switch a high current ON or OFF.

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Capacitor

Diode

Reed rely

Thermistor

In Compton's effect it was considered that X-rays consist of

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Electrons

Holes

Neutrons

Protons

Which of the following phenomenon is explained by the tunnel efffect.

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Alpha decay

Beta decay

Gama decay

Radioactivity

An operational amplifiers will act as an inverting amplifier when the input signal is connected to.

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Inverting terminal

Non inverting terminal

Earthened wire

Both a and b

Michelson's interferometer can be used to measure.

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Wavelength of light

Intensity of light

Amplitude of disturbances

Frequency of light

The value of voltage or current that exists in a circuit at any instant of time measured from some reference point is its.

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Peak value

Peak to peak value

Instantaneous value

Average value

How solid hydrogen is obtained.

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By cascade process

By joule kelvin effect

By adiabatic expansion

Lowering temperature below melting point

A thin layer of oil the surface of water looks coloured due to.

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Pillarization of light

Different elements present in the oil

Interference of light

Transmission of light

The maximum number of rays required by a lens to form an image are

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2

3

4

Infinite

Angular moment is conserved due to

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Variable force

Constant force

Central force

Uniform force

If emf of the battery in a thermocouple is doubled, what is the rate of heat generation at one function.

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Remains unchanged

Becomes half

Become double

Becomes 4 times

When temperature increases, frequency of an organ pipe

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Decreases

Increases

Remain the same

Become zero

Soap film in sunlight appears coloured due to

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Dispersion of light

Diffraction of light

Scattering of light

Interference of light

a body floats in liquid contained in a beaker The whole system falls freely under gravity The outthrust on the body due to liquids is

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Zero

Equal to the weight of the body in air

Equal to the weight of the liquid displaced

Equal to the weight of the immersed portion of the body

What is a measure of the total energy of a thermodynamics system.

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Entropy

Enthalpy

Randomness

Chaos theory

The nuclear model of the atom was derived partly from experiments involving the scattering of alpha particles performed by.

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Chadwick

Rutherford

Anderson

Einstein

In an accelerated or non - inertial frame of reference the weight of the body depends upon.

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Acceleration of the frame of reference

Velocity of the body

Momentum of the body

Velocity of the frame of reference

Which of the following is believed to be carrier o nuclear forces.

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Lepton

Meson

Bason

Baryon

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