Question # 1

Centripetal acceleration of a body is given by formula:

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a_c=v/r

a_c=mv²/r

a_c=v/r²

a_c=v2/r

In graph referenc epoint is taken as.

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Origin

x-axis

variable

coordinates

Light from the sun contain thermal radiation of:

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Long wavelength

Short wavelength

Ultra violet rays

Visible light

What type of conversion is done candle burning?

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Chemical __ ;light

Chemical __ heat

Both a & b

None of above

SI unit of work is:

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Joule

Coulomb

Ampere

Kelvin

The unit of torque is:

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Nm^-2

Ncm

Nm^-1

Nm

Center of gravity of an irregular shaped body can be found with help of:

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Screw guage

Plumbline

Meter rode

Wedge

The Earth is surrounded by a cover of air called

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Atmosphere

Solid

Environment

Surroundings

According to Archimedes principle the density of a substance is determined by using formula

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D = w1/w2 + w1 x p

D = w1w2/w2- w1 x p

D = w1/w2 - w1 x p

D = w1w2/w2- w1 x p

The energy stored in coal is:

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Heat energy

Kinetic energy

Chemical enegy

Nuclear energy

If a body is at a depth of 'h'form the liquid surface of density 'p' , then

the liquid pressure p[' in that body is:

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P = mgh

P = pgh

P = 2mgh

P = mag

Centre of gravity of uniform square is:

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Intersection of diagonals

Point of intersection of medians

At centre

None of these

See breeze blows form sear to land during:

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day

night

after noon

morning

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

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