Question # 1

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

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potential energy

pressure energy

strain energy

(a) and (b) only

In a voltmeter the conduction takes place due to

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Electrons only

Holes only

Electrons and holes

Electrons and ions

If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be

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permanent

temporary

either of them

none of them

The number of input terminals of an op-amp is:

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One

Two

Three

Four

None of these

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

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Q/4πr²

2Q/4πr²

Q.d

Zero

Victor de-Brogile received the Nobel prize in physics in

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1925

1929

1932

1935

Cosine of an angle is positive in:

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2nd quadrant

3rd quadrant

4th quadrant

All of these

When the different streamlines cannot cross each other, then this condition is known as

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continuity condition

turbulent flow condition

steady flow condition

none of them

The concept of field theory was put forward by

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Franklin

Kepler

Oersted

Michael Faraday

A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:

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Circular motion, circumference

Vibrator, chord

SHM, diameter

SHM, circumference

When a body is moving on a surface, the force of friction is called

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Static friction

Dynamic friction

Limiting friction

Rolling friction

One degree of thermodynamics scale of temperature is called:

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Celsius

Fahrenheit

Kelvin

Radian

When a body moves with increasing acceleration, its velocity-time graph is a

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straight line

horizontal straight line

vertical straight line

curve

The effect of decrease in pressure with the increase in speed of the fluid in horizontal pipe is drive from

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Bernoulli's theorem

Venturi effect

Torricelli's theorem

Diastolic effect

Electromagnetic waves emitted by hot bodies are called:

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Photoelectrons

Alpha rats

Thermal radiation

None of these

A projectile on its path gets divided into two pieces at its highest point.Which is true?

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Momentum increases

Momentum decreases

Kinetic energy increases

Kinetic energy decreases

The derived unit of pressure is

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kg/Ns

kgm²/s²

kg/m²s²

kg/ms²

The device which is used to measure the degree of hotness or coldness of the object.

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Thermometer

Barometer

Hypermeter

None of these

The experimental evidence in support of wave theory in Huygen's time was

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not present

not convincing

convincing

none of them

All points on a rigid body rotating about a fixed axis have

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Same angular displacement

Same angular acceleration

Donot have angular speed

None of these

To get three images of a single object,one should have two plane mirrors at an angle of

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90°

120°

30°

160°

Range of a projectile is R.when the angle of projection is 30°.Then the value of the other angle of projection for the same range is:

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45°

60°

50°

40°

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