Question # 1

The electric intensity at infinite distance from the point charge will be

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Infinite

Positive

Zero

Negative

The magnitude of chemical Effects depends upon:

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Nature of liquid

Quantity of Electricity passed through the liquid

Color of the liquid

Both (A) and (C)

Both (A) and (B)

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

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how heat is absorbed

how heat extracted

how this conversion takes place

none of them

The product of force and time is called change in:

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Momentum

Impulse

Force

Both a and b

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

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2V

3V

0.5V

V

By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s²)

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58.8 m/s

49 m/s

65 m/s

19.6 m/s

Victor de-Brogile received the Nobel prize in physics in

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1925

1929

1932

1935

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

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F = B²

F = 0

F = B

F = B/2

A high temperature, the proportion of shorter wavelengths radiation, emitted by the body

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decreases

first increases then decreases

increases

any one of them

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluids

None of these

Super conductor offers no resistance to

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Thermal agitation

Electric current

Induced current

None of these

Soap bubble looks colored due to

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Dispersion

Reflection

Interference

Any one of these

The typical speed of Earth around the sun is

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29700 ms^-1

29600 ms^-1

29500 ms^-1

29400 ms^-1

The simplest type of rectification known as half wave rectification is obtained by

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Using a transistor

Suppressing the harmonics in A.C. voltage

Suppressing half wave of A.C. supply by using diode

Using a Coolidge

If they donot have a = 9.8 ms^-2 they would fly

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In the same orbit

Off in a straight the tangent to Earth

Leaving the present orbit

None of these

Which of them is not a physical quantity

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Density

Impulse

Energy

Kilogram

Newton's rings are formed due to

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Refraction of light

Diffraction of light

Interference of light

None of these

Strain is dimensionless and has

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Units

No units

S.I. units

None of these

Viscosity of gas with increase in temperature

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Decreases

Increases

No change

All

Reflection of light from water, glass, snow and rough road surfaces, for larger angle of incidences, produces

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images

bright images

interference

glare

In metallic crystals which of the following thing remains constant?

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amplitude of oscillations

temperature of solid

average atomic positions

all of them

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