Question # 1

Original source of energy for biomass is

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Earth

Star

Moon

Sun

A device based upon the thermodynamics property of matter is called.

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Calorimeter

Heat engine

thermometer

Voltmeter

In young's double slit experiment for the interference the central region will be

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Dark

Bright

Coloured

None of these

If the radius of droplet becomes half, then its terminal velocity will become.

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Double

Half

One fourth

Remains same

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

Opted unit to measure blood pressure is.

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N/m2

Pascal

mm of Hg

N.m2

Angular acceleration is produced by

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Power

Torque

Pressure

Force

The law of conservation of energy gives us

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Equation of continuity

Stock's law

Bernoulli's equation

Viscosity

The centre of Newton's fringe is dark due to.

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Destructive interference

Diffraction

Constructive interference

Polarization

Frequency 'f' and time period 'T' are related as

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The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

The resultant of two forces 3N and 4 N acting at right angle to each other is.

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5 N

6 N

1 N

7 N

Heat is form of.

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Power

Momentum

Energy

Torque

10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be

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1 Hz

2 Hz

5 Hz

10 Hz

Speed of sound in aluminum at 20 ^oC is.

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3600 m/s

5100 m/s

5130 m/s

3500 m/s

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

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