Question # 1

If two gases have same reduced pressure volume and temperature it is according to

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Boyle's law

Charles law

Law of corresponding state

Zeroth law

The centre of gravity of a cylinder is.

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At the intersection of medians

At the centre

At the middle point of axis

At the intersection of diagonals

The maximum K.E. with which photoelectrons are emitted depends very strongly on the.

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Intensity of incident light

Electric field near the photocathode

Frequency of incident light

Polarization of incident light

The electrons behave as wave because.

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They can be diffracted by a crystal

They can be defecting by magnetic field

They can be deflecting by electric field

they can produce ions in gases

What is the traditional name for a capacitor

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Choke

Condenser

Transformer

Inductor

A body of mass 2 kg is suspended from the celling of an elevator moving up with an acceleration 'g' its apparent weight in the elevator will be.

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9.88 N

19.8 N

29.4 N

39. 2 N

Hearing damage is possible at sound pressure of

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0 dB

50 dB

130 dB

195 dB

If a body retains completely its altered shape and size, it is said to be

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Perfecto elasticity

Perfect plasticity

Elasticity

elastic limit

The gravitational force between two bodies does not depends upon.

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The product of their masses

Their separation

The sum of their masses

The constant of gravitation

Why freezer a refrigerator is located in the top section

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Motor is not affected

Heat gained from environment is less

The entire chamber of freezer is cooled quickly

Heat gained from environment is more

Which of the following is used as a remedy for defect of hypermetropia.

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Convex lens

Concave lens

Cylindrical lens

Bifocal length lens

In annitilation of matter, positron and electron pair disappears into two

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Alpha particles

Beta particles

Game particles

X-rays

In rectifiers silicon junction diodes are preferred to germanium type because.

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They are cheaper

They are durable

Their much lower reverse current makes them more efficient

Of their geometry

In comparison with the electrostatic force between two electrons the electrostatic force between two protons is.

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Zero

Smaller

Greater

Same

The discovery of interference of light was made possible in.

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1801

1901

1825

1925

The negative of the potential gradient is

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Potential energy

Electrostatic force

Electric field intensity

Electromotive force

One becquerel is equal to

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Decay of orie radioactive atoms per second

Decay of 10 radioactive atoms per secnd

Decay of 100 radioactive atoms per second

Decay of infinity radioactive atoms per second.

When mas of a string is increased 4 times its original valve, the velocity of the wave.

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Becomes double

Reduces to one half

Reduces to one fourth

Increases 4 times to its original value

X-rays are good for imagining

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Tendons

Brain

Bones

Heart

During the alpha decay process

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A neutron is emitted

a electron is emitted

A helium core is emitted

A proton core is emitted

A 100 Hz A.C. is following in A 7 mH inductance What is its reactane.

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0.4 Ohms

4.4 Ohms

7Ohms

44 Ohms

Which of the following properties of light does not very with the nature of the medium.

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Amplitude

Frequency

Wavelength

Time period

A real object paled inside the focus of a convex lens gives

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Real image but diminshed

Real image but enlarged

virtual image but diminished

Virtual image but enlarged

On reflection of light from a source there occurs a change in

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Wavelength

Velocity

Period

Frequency

The number of 0.0001 is abbreviated correctly by

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1 x 10⁴

10^-3

10^-4

0.1 x 10⁴

The terminal velocity in case of spherical droplet is directly proportional to.

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Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

Which of the following is required for maintaining sustained chain reaction.

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Neutrons

Protons

Electrons

Photons

Transformer make possible the

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transmission of A.C. power

conversion of AC and D.C

Cyclotron

Particle accelerator

Newton's rings are experimentally derived from the phenomenon of.

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Polarization of light

Resolution of light

Interference of light

Diffraction of light

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

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Attraction of nucleus

Collision with nuclei

Interactions with electrons

Electrostatic repulsion by the nucleus

When the temperature of source and sink of a heat engine become equal the entropy change will be.

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Zero

Maximum

Minimum

Negative

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