Question # 1

In a straight current carrying conductor, the direction of magnetic field can be found by

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right hand rule

left hand rule

head to tall rule

none of these

Fluid friction is _____ the friction between two solid surfaces:

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Greater than

Smaller than

Equal to

None of these

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

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0.5 m/sec2

5 m/sec2

1.5 m/sec2

9.8 m/sec2

A body is executing free vibrations when it oscilates

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with the interference of an external force

without the interference of an external force

with the interference of an internal force

none of them

A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from

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2nd group

fourth group

fifth group

sixth group

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

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300°C

573°C

600°C

743°C

Bernoulli's equation is important in the field of

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Electrical circuit

Magnetism

Photoelectric effect

Flow of fluids

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

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constant rate

volume rate

flow rate

steady rate

The special theory of relativity is based on:

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Four postulates

Three postulates

Two postulates

One postulate

None of these

In the phenomenon of hysteresis

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magnetism leads the magnetising current

magnetism lags behind the magnetising current

meganetism goes along the magnetising current

none of them

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

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short range order

long range order

both of them

none of them

Upper fixed point of the thermometer is marked by using

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Barometer

Hydrometer

Hygrometer

Hypsometer

The magnitude of velocity at any instant is

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In the assessment of total uncertainties when power factor is involved, the percentage uncertainty is

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Added

Multiplied by that power

Divided by that power

None of these

Si system is based upon ______ kind of units

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One

Two

Three

Four

Impulse is the force applied for a very short interval time in which force is

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Constant

Not constant

May be constant for some time

None of these

Sky seems blue due to

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Diffraction

Polarization

Dispersion

Scattering

A Gaussian surface is always an imaginary

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Open surface

Closed surface

Both

None of these

An electron and a proton are projected at right angles to a uniform magnetic field with

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the electron trajectory will be less curved than proton’s trajectory

the electron trajectory will be more curved than proton’s trajectory

) both trajectories will be equally curved

) both particles continue to move along a straight lins

If the incident light contains different wavelengths the images of each wavelength for a certain value is diffracted in the

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Same directions

Different direction

Opposite direction

None of these

Electric field lines emerge the charges in

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One dimension

Two dimensions

Three dimensions

None of these

According to Einsteins theory, gravity follows the inverse square law expect in

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Weak gravitational field

Strong gravitational field

Very very weak gravitational field

None of these

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