Question # 1

First law of thermodynamics is consequence of conservation of

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Work

Energy

Heat

All of these

In case of planets, the necessary acceleration is provided by:

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Gravitational force

Coulomb force

Frictional force

None of these

A mass of 5kg moves with an acceleration of 10m s^-2force applied is

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10N

50N

2N

20N

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

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A - Z

A + Z

Z

A

Energy gas behaves like an ideal gast at

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High temperature and low pressure

Low temperature and high pressure

Both A and B

None

The value of E₀in coulomb's law is:

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9 x 10⁹Nm²C^-2

8.85 x 10^-12C²N^-1m^-2

8.85 x 10^-12Nm²C^-2

9 x 10⁹C²N^-1m^-2

When a stress changes the shape, it is called the

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compressional stress

tensile stress

shear stress

any one of them

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

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mgh

Its wight

Weight X height

Zero

Tick the one which is not a crystalline solid:

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Zirconia

Glass

Copper

Ceramic solid

An ionic compound

The chemical behaviour of an atom is determined by

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binding energy

atomic number

mass number

number of isotopes

A resistance used in galvanometer to make it voltmeter is called

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shunt resistance

high resistance

zero resistance

none of these

In Young's double slit experiment for the interference of light, the central region of the fringe system is

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Bright

Dark

Bright and dark

None of these

With tremendous information carrying capacity is called

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Data entry

Band width

Word processing

None of these

Which of these statements is not correct?

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Moment of inertia is independent of shape and size of the body

Moment of inertia depends on choice of axes

Moment of inertia does not depend on mass of body

None of these

The unit of Stefan Boltzman constant σ is:

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W/mK⁴

Cal/m³K²

W/m²K⁴

K/m²K⁴

The typical speed of commercial automobile (max) is

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50 ms^-1

60 ms^-1

62 ms^-1

65 ms^-1

The projectile is the motion which is

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One dimensional

Two dimensional

Three dimensional

None of these

Dimensions of refractive index

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[M°L°T°]

[MLT]

[ML^-1T^-1]

None

The deflection by Einstein is as great as newtons is

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Twice

Thrice

Four times

Half time

At the maximum height the V_f is

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_Constant

Zero

Maximum

None of these

When 400.1 is added to 20.54 we get

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420

420.65

420.1

420.6

At points where the crest (or trough) of one wave coincides with the crest (or trough) of the other wave, the wave produces

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destructive interference

constructive interference

diffraction

dispersion

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