Question # 1

For working of heat engine, there must be

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A source

A sink

Ether of these

Both of them

Close orbiting satellites orbit the earth at a height of about

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400 km

4000 km

400 m

400 cm

If the time period of simple pendulum is 2 seconds its frequency will be.

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1 Hz

0.5 Hz

1.5 Hz

2 Hz

Which one of the following force cannot do any work on the particle on which it acts.

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Fractional force

Gravitational force

Electrostatic force

Centripetal force

The magnifying power of a convex lens of focal lendth 10 cm is

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7

9.6

11

3.5

The density of blood is nearly equal to.

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Air

Milk

Honey

Water

Head to tail rule is used for

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Addition of vectors

Subtraction of vectors

Multiplication of vectors

Division of vectors

The difference between tow molar capacities is equal to.

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Plank's constant

General gas equation

Molar gas constant

Boltzmann constant

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

The SI unit of power is

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Joule

Newton

Watt

Kilowatt

Artificial gravity can be created in the space ship by

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Revolving around the earth

Spinning around its own axis

Increasing its velocity

Decreasing it svelocity

Angular momentum has the same unit as

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Impulse x distance

Power x time

Linear x time

work x frequency

The dimension of viscosity are

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[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

Distance covered by a freely falling body is 2 seconds will be

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9.8 m

19.6 m

44.4 m

49 m

The direction of angular velocity of along the

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Tangent at that point

Axis of rotation

Radius towards the centre

Radius away from the centre

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

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