Question # 1

The number of base units in SI are.

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3

6

7

9

Absolute zero is equal to

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0 K

273

-273 K

373 K

If force is 200 N and length of spanner is 0.15 then torque will be:

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30 Nm

15Nm

20 Nm

10 Nm

If mass of body is 10 kg travelling with speed of light, how much energy is generated?

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E = 9 × 1017 J

E = 9 × 1015 J

E = 9 × 1018 J

E = 9 × 1016 J

The bad conductor of Heat is:

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Iron

Copper

Air

Aluminium

The weight of body on earth with mass 8 kg is:

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10 N

100 N

80 N

8 N

The earth also completes its one revolution about its axis in.

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1 Hours

6 Hours

13 Hours

24 Hours

Outer edge of the curved road is elevated to prevent

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Circular motion

Centripetal force

Skidding

Protection

Value of g increases with the:

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Increase in mass of the body

Increases in altitude

decrease the altitude

None of the above

If the force of 25 N is acting along the string to balance the weight then tension in string is

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25 N

50 N

Zero

None

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

The unit of co-efficient of linear expansion :

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K

K^-1

Jkg^-1 K^-1

None of these

Rate of doing work is called

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Energy

Torque

Power

Momentum

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