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9th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

Solar cell is are also known as:

Choose an answer

Electric cell

Photo Cell

Sun cells

Nuclear cells

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Question # 2

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 # 3

In measurement 1.032 numbers of significant figure are.

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Question # 4

A Student claimed the diameter of a wire as 1.032 cm using vernier callipers. Upto what extent do your agree with it

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1 cm

1.0 cm

1.03 cm

1.032 cm

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Question # 5

The potential energy of a body of mass 'm' placed at a height 'h' above the surface of earth is equal to

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P.E. = mg

P.E. = mgh

P.E. = 3mgh

P.E. = 2mgh

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Question # 6

The speed of satellites in GPS is:

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8.73 kms^-1

3.87 ms^-1

32 ms^-1

3.87 kms^-1

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Question # 7

Tensile strain produces the change in the object.

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Length

Volume

Area

Density

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Question # 8

If the velocity of moving body in circle is doubled, then its centripetal force is

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Double

Half

Four times

Remain

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Question # 9

Earth revolves around the:

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Moon

Sun

Glaxy

None

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Question # 10

A force of 200 N is making an angle of 30°. What is horizontal component?

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173.2 N

100 N

600 N

None of these

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Question # 11

The weight of a body is 100 N its weight in deep space is :

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100 N

50 N

25 N

0 N

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Question # 12

The altitude of geostationary orbits in which communication satellites are launched above the surface of the earth is;

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850 km

1000 km

6400 km

42300 km

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Question # 13

If the velocity of body decreases with time then acceleration will be.

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Positive

Negative

Variable

Uniform

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