Question # 1

The numebr .00580 is scientific notation is.

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5 .80 x 10⁵

5 .80 x 10^-4

5 .80 x 10^-3

5 .80 x 10^-2

Poor conductor of heat is:

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Copper

Aluminium

Water

Iron

All divers need to wear seat belt because of effect of:

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Inertia

Gravity

Car force

Nil

The unit of coefficient of friction .

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Newton

ms^-1

ms^-2

No unit

Co-efficient of friction between iron and iron is:

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1.0

0.62

0.9

1.2

During the hot summer day the vlaue of atomospheric pressure is:

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Increase

Decreases

Constant

None of these

When a body is lifted through a height h, the work donw on it appears in the form of its.

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Kinetic energy

Potential energy

Elastic energy

Geothermal energy

Kgms^-2 is equal to:

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Joule

Mole

Newton

Watt

When the cyclist stop pedalling, bicycle stops due to :

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Friction

Momentum

Weight

Mass

Which of the following affects evaporation?

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Temperature

Surface area of the liquid

Wind

All of the above

In symbols, co-efficient of volume expansion is defined as

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β = ΔT/V∘ΔV

β = ΔV/ΔT

β = ΔV/V∘ΔT

β = ΔT/ΔV

The mass of a body

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Decreases when accelerated

Increases when accelerated

Decreases when moving with high velocity

None of the above

Earth's gravitational force of attraction vanishes at:

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6400 km

Infinity

42300 km

1000 km

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