Question # 1

To convert galvanometer into ammeter we connect

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small resistance in parallel with galvanometer

small resistance in series with galvanometer

high resistance in series with galvanometer

high resistance in parallel with galvanometer

The curie temperature of iron is about

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250°C

500°C

750°C

1000°C

The behaviour of gases is well accounted by the kinetic theory based on

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microscopic approach

macroscopic approach

both of them

none of them

A high concentration of red blood cells increases its viscosity from

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3 - 5 times that of mercury

5 - 8 times that of mercury

3 - 5 times that of water

5 - 8 times that of water

Graphs which are used to illustrate the variation of velocity of an object with time are called

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distance time graphs

speed time graphs

velocity time graphs

acceleration time graphs

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

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1/4 times

4 times

Twice

1/2 of 8 cm diameter pipe

The effects of bends in a wire on its electrical resistance are:

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Zero

Much larger

Larger

Smaller

None of these

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

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0.1 watt

1 watt

10 watt

100 watt

A P-N juction or semiconductor diode cannot be used as

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A rectifier

Detector

Oscillator

An amplifier

Amorphous solids:

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Have definite melting points

Are called glassy solids

Have no definite melting point

Both (B) and (C)

Both (A) and (C)

The internal energy of a system does not depend upon the

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initial state of the system

final state of the system

path

none of them

Which equation is used to define resistance

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Energy = (current)²x resistance x time

Potential difference = current x resistance

Power = (current)² x resistance

Resistivity = resistance x area + length

The range of projectile is 50 m when θ is inclined with horizontal at 15° what is the range when θ becomes 45°?

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400 m

300 m

200 m

100 m

In reversible process there is a reversed change in

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Working substance

Thermal

Mechanical

B and C

If C and R denote capacity and resistance,the dimensional formula of CR is

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M°L°T^-1

M°L°T°

Not expressible in terms of MLT

Monochromatic light means waves of:

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Same frequency

Same colour

Same wavelength

All of them

The renewable energy source is

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Natural gas

Biomass

Tide3s

None of these

On Celsius scale freezing point of water is taken as

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0°C

100°C

180°C

None of these

To decrease timing uncertainly

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Increase number of vibration

Decrease number of vibration

Increase length of pendulum

Decrease length of pendulum

The principle of rocket motion is based on the

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First law of motion

Second law of motion

Third law of motion

None of these

The power output of a full wave rectifier is:

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Equal to H.W.R

Twice of H.W.R

Half of H.W.R

Four times of H.W.R

The blood pressure of man

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Increase with age

Decrease with age

Remains same

Cannot predicted

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