Question # 1

The devise used to measure the atmosphere pressure is:

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Rain gauge

Vacuum cleaner

Screw gauge

Barometer

Earth's gravitational force of attraction vanishes at:

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6400 km

Infinity

42300 km

1000 km

In solids, Heat is transferred by:

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Radiation

Conduction

Convection

Absorption

Formula of Power:

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P = wt

P = w/t

P = t/w

P = w/t²

The S.I unit of work is :

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J

N

Kg

m

Anything kept in thermos :

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In temperature remain constant

Its temperature decrease

Its temperature increase

None of these

In screw gauge if zero of circular scale is behind the index line is called error.

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Positive

Zero

Negative

None of these

1 N ___________

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1 kgms^-2

1 kg ms^-1

ms^-2

All

Unit of strain is

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Nm

N

Both a and b

No unit

If an object is moving with constant speed then its distance time graph will be a straight line.

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Along time -axis

Along distance -axis

Inclined to time - axis

Parallel to time-axis

Law of Gravitation is consistence with:

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1st Law of motion

2nd Law of motion

3rd Law of motion

Law of momentum

SI unit of pressure is pascal, which is equal to

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104 Nm-2

1 Nm-2

102 Nm-2

103 Nm-2

A string is stretched by two equal and opposite forces 10 N each. The tension in the string is

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Zero

5N

10N

20N

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