Question # 1

The number of significant figure in 8.80 x 10⁶ kg is

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1

3

6

5

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

Substances that don't flow easily has

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Large co-efficient of viscosity

Small co-efficient of viscosity

Medium co-efficient of viscosity

Zero-coefficient of viscosity

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

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7

9.6

11

3.5

The SI unit for measuring plane angle is

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Streadian

Radian

Both a and B

None of these

Angular displacement is

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Scalar quantity

Vector quantity

Basic quantity

None of these

If the pressure of a gas is doubled, then speed of sound is.

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Doubled

Become half

Not affected

Increases by four times

In order to produce beats, the two sound waves should have.

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The same amplitude

Slightly different amplitude

The same frequency

slightly different frequencies.

In vibrating string, the points where the amplitude is maximum are called.

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Nodes

Antinodes

Troughs

Crests

Almost all the raw energy is librated from

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Heat

Earth

Light

All of these

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

The value of angular momentum is maximum when 0 is

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90^o

60^o

75^o

45^o

Star moving towards the earth show

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Red shift

Blue shift

Green shift

Yellow shift

The system international SI built up from

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Derived Units

Supplementary units

Basic Units

All of these

The efficiency of diesel engine is about

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25% to 30%

35% to 40%

40% to 50%

50% to 60%

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

Blood pressure is measured by

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Hydrometer

Barometer

Sphygmomanometer

Galvanometer

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