Question # 1

Fluids resist force, This property is called

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Stiffness

Strength

Ductility

Elasticity

Parallel vectors of same magnitudes:

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Are equal

Are unequal

When added give the some equal to zero

Give the answer equal to zero

A wave, which transfer energy by moving away from the source of disturbance is called a

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progressive wave

travelling wave

both of them

none of them

Inertia mass and gravitational mass are

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opposite

identical

identical when there is no friction

all of them

A typical rocket ejects the burnt gases at speeds over

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400 ms^-1

40000m s^-1

40000 ms^-1

60000 ms^-1

The ratio of shearing stress/shearing strain is called as

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Modulus

Pascal modulus

Hooker's modulus

Shear modulus

The graph showing the variation of displacement with time is a:

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Sine curve

Straight line

Parabola

None of these

Magnetic effect of current is used:

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In electric motor

To detect current

To measure current

All of these

None of these

If the distance between two charges is doubled, the force between them will become:

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Double

Half

Three times

One fourth

One third

The direction of vector in space is specified by:

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One angle

Two angles

Three angles

None of these

Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons

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Frequency

Penetrating power

Energy

Method of creation

The source in the heat engine is at

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Low temperature

High temperature

Zero temperature

None of these

The equation PVr = Constant applies to:

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Isothermal process

Adiabatic process

Isobaric process

None of these

A fibre optic communication system consists of

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one major component

two major components

three major components

four major components

Two bodies with masses M_A and M_b are moving with equal kinetic energy.Their linear momenta are numerically in a ratio

|P_A| : |P_b| will be:

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M_b : M_A

M_A : M_b

√M_A : √M_b

M²_A : M²_B

The Earth rocks are in molten and partly molten state, usually within the Earth surface of

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5 km

10 km

15 km

18 km

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3 N.The force between A and B when the charges on them are doubled and distance is halved

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1.92 N

19.2 N

12 N

0.192 N

The maintaining the elastic limits of any body, the relation stress to strains is called

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Hooke's law

Pascal's law

Young's law

None of them

To observe diffraction phenomenon the size of a obstacle

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Should be much larger than the wavelength

Should be of the same order as the wavelength

Have no relation of wavelength

Should be exactly λ/2

Which of the following is not an advantages of using optical fibres over copper cables?

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signal attenuation

number of signals carried per wire

cost of installation

none of the above

The colour of light is determined by is

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Wavelength

Frequency

Velocity

Amplitude

Ratio of moment of inertia of two objects A and B is 2:3 which of the following is the ratio of torques of A and B respectively. If both are being rotated with constant angular acceleration

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3:4

2:3

3:2

4:3

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