Question # 1

The kinetic energy of a body of mass 2 kg is 25J, its speed is

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5 ms-1

12.5 ms-1

25 ms-1

50 ms-1

O maximum height the P.E of the body is:

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Zero

Maximum

Minimum

None of these

Newton's first law of motion is valid only in the absence of:

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Force

Not force

Friction

Momentum

Room are heated using gas heaters by:

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Conduction only

Convection and radiation

Radiation only

Convection only

The momentum of two or more than two bodies intersacting remain constant in:

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Law of inertia

Isolated system

System

None

The Earth attracts a body with a force equal to its:

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Velocity

Gravity

Weight

Mass

Water freezes at

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0oF

32oF

273 K

0 K

The value of 'g' on the surface of moon is:

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1.62 ms^-2

10 ms^-2

20 ms^-2

Zero

Absolute zero is equal to

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0 K

273

-273 K

373 K

All are conductors except:

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Copper

Wires

Steel

Wood

What kind of waste is produced by nuclear power plant?

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Carbon di oxide

Radio active

Fuels

Toxic material

SI unit of pressure is pascal, which is equal to:

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10⁴ Nm^-2

1 Nm^-2

10²Nm^-2

10³ Nm^-2

In a dam the water energy is called:

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Heat energy

Electrical energy

G.P.E

Mechanical enrgy

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