REVIEW OF SS ONE TOPICS

After entering a flat plate collector, the temperature of the transfer fluid

• Increases

• decreases

• remain the same

• becomes potential energy

What type of reflector is used in the focusing collector for concentrating the solar beam?

• concave

• convex

• plan

• zig zag

The two devices used in intercepting and converting solar energy to thermal energy are

• Flat plate and focusing collectors

• Flat plate and direct collectors

• Focusing and concentrating collectors

• Focusing and absorber collectors

Which of the following can be classified as a non-contact force?

• magnetic force

• pull force

• push force

• friction

A car is moving along the road in one direction at a speed of 100 km/h and another car is moving in the same direction at a speed of 60 km/h. What is the relative speed between the cars?

• 160km/h

• 100km/h

• 60km/h

• 40km/h

Which of the following is an example of rotational motion?

• Motion of a child on a swing

• Motion of the earth about its axis

• Motion of a simple pendulum bob

• Motion of a rocking chair

Force is given by mass multiplied by acceleration. This means that force is a combination of

• Only derived quantities

• Only fundamental quantities

• Derived and fundamental quantities

• Mass and fundamental quantities

Which of these is a fundamental quantity?

• velocity

• speed

• time

• vector

If a car weighs 2,000 Newton, Newton is the quantity and 2,000 is the unit. This statement is 

• true

• false

Density is a derived quantity that depends on the mass of a substance and the _____________ of a substance.

• velocity

• volume

• time

• weight