Question # 1

To find x component of force 'F' we use formul:

Choose an answer

F Sin 𝜽

F Cos 𝜽

F tan 𝜽

F/F1

Einstein's mass-energy equation relation is:

Choose an answer

E =1/2 mc²

E =mc²

E =m²c

E = 2 mc²

A string is stretched by two equal and opposite force 10 N each. The tension in the string is:

Choose an answer

Zero

5 N

10 N

20 N

Melting point is also known as:

Choose an answer

Moiling point

Freezing point

Fusion point

None of these

The amount of heat absorb by body depends on the :

Choose an answer

Colour of the surface

Nature of surface

Texture of surface

Both A and B

Land and sea breezes are the result of:

Choose an answer

Absorption

Radiation

Conduction

Convection

The vector which has the same effect as the combined effect of vectors:

Choose an answer

Negative vector

The vector

Resultant vector

Zero vector

Convection of heat is a process of heat transfer due to;

Choose an answer

Random motion of molecules

Downward motion of molecules

Upward motion of molecules

Free motion of molecules

In ___________ (CFC) was found reacting with ozone.

Choose an answer

1920s

1970s

1950s

1960s

Water on cooling below 4 ^oC begins to:

Choose an answer

Expand

Contract

Boils

None of these

Mass is measured by:

Choose an answer

Spring balance

Measuring cylinder

Physical Balance

None of these

A couple is formed by:

Choose an answer

two forces perpendicular to each other

Two like parallel forces

To equal and opposite forces in the same line.

Two equal and opposite forces not in the same line

Stress is defined as

Choose an answer

Stress = Force/ Area

Stress = Area/Force

Stress = Area/ Volume

Stress = Mass/ Volume

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer