Question # 1

What is another name for laminar flow?

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streamline

unsteady flow

turbulent flow

both (a) and (b)

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

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Minimum Work

Maximum Work

Zero Work

Negative Work

The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:

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Critical temparature

Temperature of vaporization

Melting point

Both (A) and (C)

Both (A) and (B)

An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as

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magnetic

magnetic dipole

magnetic monopole

none of them

Escape velocity from surface of Moon as compared to that from Earth surface is:

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Greater

Smaller

Equal

None of thes

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

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parabola

straight line

hyper bola

ellipse

When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:

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Increases

Decreases

Remains constant

None of these

The motion of a body in a straight line is the motion in

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one dimension

two dimension

three dimension

four dimension

In case of the three dimensional deformation, when volume is involved, the ratio of applied stress to volumetric strain is called

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Young's modulus

Bulk modulus

Shear modulus

all of them

The best conductor is:

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Silver

Copper

Aluminimum

Both B and C

None of them

The induced current in a conductor depends upon:

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both A and B

None of these

Planck's constant has the dimensions of:

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Energy

Momentum

Frequency

Angular momentun

Commercial polarizing material is

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Colour glass

Infra red glass

Polaroid glass

None of these

Derived quantities are those which can

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Be subdivided

Be derived from other quantities

Not derived

None of these

One poise = ___________.

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0.1 Nsm^-2

0.1 Pascal second

1.01 x 10⁵N

both A and B

The spacing between lines of diffraction grating is

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Opaque

Transparent

Semi-transparent

None of these

Drag force on a falling ball depends upon

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Size of the body

Shape of the body

Orientation of the body

All of these

In case of diffraction grating, unit of grating element is:

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Centimeter

Kilometer

As that of g

as that of angle

The transmitter in optical fiber system contains a device called

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LED

Diode

Transistor

None of these

The splitting of white light into several colors on passing through a glass prism is due to

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Refraction

Reflection

Interference

Diffraction

Which of the following pairs is not correct

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Strain - dimensional

Stress - N/m²

Modulus of elasticity - N/m²

Shear stress - N/m²

Unit of dielectric constant of medium is

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Coulombs /Newton-meter

Newton-meter²/coulomb²

coulomb²/ (Newton-meter)²

None of the above

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