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Physics 9th Class English Medium Unit 6 Online Test MCQs With Answers

Question # 1

Solar energy is a type of.

Choose an answer

Renewable

Non-renewable

Natural

None

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Question # 2

The energy stored in coal is

Choose an answer

Heat energy

Kinetic energy

Chemical energy

Nuclear energy

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Question # 3

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

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Question # 4

The kinetic energy of the body of mass 1000 kg moving a speed of 20 ms^-1 will be:

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2 x 10² J

2 x 10³J

2 x 10⁵J

2 x 10⁸J

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Question # 5

What type of conversion is done candle burning?

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Chemical __ ;light

Chemical __ heat

Both a & b

None of above

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Question # 6

The large unit of work is:

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Kilowatt

Kilo joul

Mega joul

Both B and C

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Question # 7

An ideal system gives output:

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50%

60%

80%

100%

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Question # 8

According to law of conservation of energy increases K.E is equal to:

Choose an answer

Increase P.E

Decrease P.E

Decrease K.E

None of these

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Question # 9

Which quantity is scalar?

Choose an answer

Force

Power

Velocity

Torque

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Question # 10

Formula of Power:

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P = wt

P = w/t

P = t/w

P = w/t²

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Question # 11

What will be the magnitude of work if a force of 25N pulls a stone through a distance of 5 m in its directions

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25 J

50 J

75 J

125 J

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Question # 12

Stretched how has type of energy:

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K.E

mgh

P.E

Elastic P.E

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Question # 13

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

Choose an answer

E = 9 × 1017 J

E = 9 × 1015 J

E = 9 × 1018 J

E = 9 × 1016 J

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