Question # 1

At low speeds, the drag force is

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proportional to speed

inversely proportional to speed

not simply proportional to speed

none of them

First law of thermodynamic is special case of

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Law of conservation of energy

Charle's law

Law of conservation of mass

Boyle's law

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

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plastic limit

plastic deformation

proportional limit

elastic behaviour

Compton derived an expression to find compton shift by applying to the process, the law of conservation of:

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Energy only

Momentum only

Mass only

Charge only

Both (A) and (B)

Michael Faraday is known by his work on

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Nuclear strong force

Gravitational force

Nuclear weak force

Electric force

None of these

A potential barrier of 0.7 V exists across p-n junction made from:

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Germanium

Silicon

Arsenic

Gallium

Indium

Ohm is the unit of

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current

capacitance

energy

resistance

Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:

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2 N

- 2 N

18 N

36 N

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

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200 m

11000 m

2000 m

8000 m

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

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RMS value

Instantaneous value

Valued average over a cycle

Zero

Both (B) and (C)

A traveling wave has a shape of:

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Square wave

Sine wave

Parabola

hyperbola

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

A ballistic missile is

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Unpowered

Unguided

Both

None of these

The S.I. unit of stress is also

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Force

Pascal

Momentum

None of these

Which of the following statement about centripetal and centrifugal force is correct

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They are oppositely directed

They cancel each other

Both are on the same body

None of these

A pendulum of time period T is kept suspended in a train accelerating uniformly,then its time period

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Remains unchanged

Increases

Decreases

None of these

The process of liquefaction and evaporation of a substance performed slowly are

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Reversible

Practically reversible

Not reversible

None of these

A particle undergoes uniform circular motion.About which point on the plane of the circle.will the angular momentum of the particle remain conserved?

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Center of the circle

On the circumference of the circle

Inside the circle

Out side the circle

The drag force F on a sphere of radius 'r' moving slowly with speed V through a fluid of viscosity η by Stake's law

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F = πηra

F = 6πηrω

F = 6πηrV

F = 6πηraV

The tides are produced in the sea due to force which is

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Electromagnetic force of moon

Gravitational force of moon

Combine effect of both forces

None of these forces

The temperature of sun is measured with

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Platinum thermometer

Gas thermometer

Vapour pressure thermometer

Pyrometer

Between layers of liquid in relative motion, viscosity introduces

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Tangential forces

Radial forces

Intermolecular forces

Cohesive forces

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