0654_2017__ON_QP_11_Phys

28. The diagram shows a distance-time graph for a vehicle.

Which row describes the motion of the vehicle in region P and in region Q of the graph?

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• 
• 
• 

29. A metal block is heated until it is completely melted. None of the melted metal evaporates.

The metal now solidifies.

What happens to the mass of the metal during the changes of state?

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30. The diagram shows a solid rectangular block made of material of density 2.0 g / cm3.

What is the mass of the block?

• 2.0 g

• 6.0 g

• 14 g

• 24 g

31. A worker carries bricks up a ladder.

The following quantities are known.

● the height the bricks are lifted up

● the time taken for the worker to lift the bricks

● the volume of the bricks

● the weight of the bricks

Which quantities are needed to calculate the useful power produced by the worker as he carries

the bricks up the ladder?

• height, time and volume

• height, time and weight

• height, volume and weight

• time, volume and weight

32. A gas is contained in a cylinder of constant volume.

The gas is cooled and this causes its pressure to change.

What happens to the speed of the molecules of the gas, and what happens to the pressure of the

gas?

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• 
• 
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33. A boy sits near a campfire. He holds an iron bar with one end in the fire. His hand becomes hot.

In which ways does thermal energy (heat) from the fire reach his hand?

• conduction and convection only

• conduction and radiation only

• convection and radiation only

• conduction, convection and radiation

34. The diagram represents a wave.

How many wavelengths are there between X and Y?

• $\frac{2}{3}$

• $1$

• $1\frac{1}{2}$

• $3$

35. A plane mirror is used to form an image of an object.

At which labelled point is the image formed?

• A

• B

• C

• D

36. Which group of electromagnetic radiations is arranged in order of increasing frequency?

• infra-red, visible light, ultraviolet

• ultra-violet, visible light, radio waves

• X-rays, radio waves, γ-rays

• γ-rays, X-rays, infra-red

37. Four loudspeakers each vibrate at the frequencies shown.

Which loudspeaker produces the highest-pitched sound that can be heard by a human?

• 5.0 × 10³ Hz

• 15 × 10³ Hz

• 25 × 10³ Hz

• 35 × 10³ Hz