SA 1 revision

Which of the following is a contact force?

• Gravitational force

• Electrostatic force

• Magnetic force

• Frictional force

The SI unit of force is:

• Joule

• Newton

• Pascal

• Dyne

A push or pull on an object is called:

• Pressure

• Force

• Friction

• Mass

Which instrument is used to measure force?

• Barometer

• Manometer

• Spring balance

• Ammeter

The pressure exerted by a force on a surface depends on:

• Force only

• Area only

• Both force and area

• Neither force nor area

When force is applied on an object, it may change its:

• Shape

• Speed

• Direction

• All of the above

Which of the following increases pressure?

• Increasing force

• Decreasing area

• Both a and b

• None of these

A girl standing on heels exerts ______ pressure than when standing flat-footed.

• Less

• More

• Same

• No

Pressure is defined as:

• Force × Area

• Force ÷ Area

• Area ÷ Force

• Mass ÷ Volume

Which of these is a non-contact force?

• Friction

• Gravitational force

• Muscular force

• Tension