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9th Class Physics Chapter 6 Work and Energy English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

The kinetic energy of a body of mass 2 kg is 25 J. Its speed is:

Choose an answer

5 ms^-1

12.5 ms^-1

25 ms^-1

50 ms^-1

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Question # 2

The energy stored in coal is

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Heat energy

Kinetic energy

Chemical energy

Nuclear energy

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Question # 3

The energy possessed by a body due to height is called:

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P.E

K.E

Both

None

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Question # 4

Kinetic energy is possessed by a body by:

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Virtue of motion

Height

Rest

Nil

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Question # 5

Work is zero when "F" and "S" will be:

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Parallel

Perpendicular

Anti parallel

Tangent

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Question # 6

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

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Question # 7

The work is negative if the angle between force and displacement is:

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0°

45°

90°

180°

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Question # 8

The power of electric kettle is 500W and takes 2s to heat up, find heat generated?

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E = 250 w

E = 1000 w

E = 10000 J

1KJ

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Question # 9

Which of the following is non-renewable fossil fuel?

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Oil

Coal

Gas

All of these

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Question # 10

In Einstein's mass-energy equation c means speed of light. Its value is:

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3 x 10^-8 ms^-1

3 x 10⁸ms^-1

3 x 10⁹ms^-1

3 x 10¹⁸ms^-1

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Question # 11

The energy released int he form of nuclear radiations in addition to heat and light is called:

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Mechanical energy

Gravitational energy

Chemical energy

Nuclear energy

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Question # 12

One liter is equal to:

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1 kgcm-3

1000 cm-3

10-6 m3

10-3 m3

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Question # 13

When a body is lifted through a height the work done on its appears in the form of its:

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Kinetic energy

Potential energy

Elastic potential energy

Geothermal energy

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