Question # 1

The irregular and unsteady flow of the fluid is called

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turbulent flow

steady flow

either of them

both of them

Transverse waves can be set up:

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Solids

Liquids

Gases

All of them

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

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3 more neutrons

3 more electrons

3 more protons

3 more ions

Decibel is unit of

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Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

Flight of rocket in the space is an example of

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Newton's first law

Newton's third law

Newton's second law

all of them

The temperature scale approved in SI units is:

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Celsius scale

Kelvin scale

Fehrenheit scale

None of these

Thermistors are prepared under

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High pressure and low temperature

High pressure and high temperature

Low pressure and low temperature

Low pressure and high temprature

None of these

The maximum distance of body from mean position when body is executing SHM is called

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Time period

Displacement

Amplitude

Frequency

When a wall is pushed by a person very strongly, he has done:

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Maximum work

Zero work

Positive work

Negative work

In gases, the charge carries are:

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Electrons

Positive ions

Negative ions

Both (A) and (C)

Both (A) and (B)

If a body reaches a speed equal to the speed of light, then its mass will became

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zero

very small

infinity

none of these

When a body is subjected to some external force, deformation is produced in:

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Shape

Length

Volume

Any of these

None of these

Physical quantities are often divided into ________ categories

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3

2

9

5

If we go from the equator to a pole, the value of g

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Increases

Decreases

Remains unchanged

First increase and then decrease

The typical speed of light, radio-waves, X-rays microwaves is

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28,000,0000 ms^-1

29,000,0000 ms^-1

30,000,0000 ms^-1

None of these

The resultant of two equal forces is double of either of the forces. The angle between them is

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120°

90°

60°

180°

A stationary wave is established in a string which vibrates in four segments at afrequency of 120 Hz. Its fundamental frequency is:

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15Hz

60Hz

30Hz

430Hz

Two point charge +3μC and +8μC repel each other with a force of 40 N if a charge of -5μC us added to each of them then the force between them will become

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-10 N

+10 N

+20 N

-20 N

Earth is considered to be

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a non-inertial frame

an inertial frame

an accelerated frame

none of the above

Acceleration produced in a body by a force varies

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inversely as the applied force

directly as the mass of the object

directly as the mass of the body

none of them

The capacity of a condenser when a dielectric is placed in between its plates

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Increases

Decreases

Doest not change

Which phenomenon of light takes place in Young's double-slit experiment?

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polarization of light

diffraction of light

interference of light

reflection of light

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