Question # 1

Total number of base units are

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Three

Five

Seven

Nine

if the field is directed along the normal to the area, then flux is:

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Maximum

Equal to zero

Equal to BA

Minimum

Both (A) and (C)

In half wave rectification

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both halves of the input voltage is used

only one half of the input voltage is used

either of these

none of these

The location and speed anywhere on earth can now be determined using relativistic effects by NAVISTAR to an accuracy of

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2 cm/s

20 cm/s

200 cm/s

2000 cm/s

Diameter of the atom is of the order of

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10^-10m

10^-12m

10^-15m

10^-9m

The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:

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0

1

2

3

Resistance of a conductor depends upon

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the quantity of current passing through it

the voltage applied between its end

its dimensions, physical state and nature of its material

all of the above

the dilation of time applies to the timing processes which are:

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Physical

Chemical

Biological

All of these

None of these

The machines which deals with the objects moving with velocities approaching that of light is called:

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Relativistic mechanics

Wave mechanics

Quantum

Statics mechanics

Decibel is unit of

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Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

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

Thermal and mechanical equilibrium is maintained all the time so that each process is

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Reversible

Perfectly reversible

Irreversible

None of these

If the tensile force is suddenly removed from a wire then its temperature will

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Decrease

Increase

Become zero

Remain constant

Longitudinal waves do not exhibit

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Refraction

Reflection

Diffraction

Polarization

The coercivity of the steel is

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less than the iron

equal to the iron

more than the iron

any one of them

The magnetic fields produced by electron in an atom is due to

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Spin motion

Orbital motion

Both a & b

All above

The two thin tubes which show most correctly the behavior of water are

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1 and 2

2 and 3

3 and 4

4 and 5

Which of the following theories of light are explained by the Young's double slit experiment?

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wave theory of light

particle nature of light

dual nature of light

corpuscular nature of light

Curie temperature is a point where:

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Diamagnetism changes to paramagnetism

paramagnetism changes to Diamagnetism

Ferromagnetism changes to paramagnetism

paramagnetism changes to Ferromagnetism

An organ pipe open at both ends and another organ pipe, closed at one end willresonate with each other, if their lengths are in ration of

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1:1

1:4

2:1

1:2

The dimensions of intensity of energy are

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MLT⁺²⁷T¹

MLT²T²

ML³

MLT^-2T³

A particle of mass 'm' at rest is acted upon by a force 'P' for a time 't' its kinetic energy after an interval 't' is

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P²t²/m

P²t²/2m

P²t²/3m

Pt/2m

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