0654_2017__ON_QP_21_Phys

28. A car moves with a constant speed of 15 m / s along a road for 20 s.

After this, the car is 100 m from where it started, measured in a straight line.

Which statement about the car is correct?

• It has travelled a distance of 100 m along the road.

• It has travelled a distance of 300 m along the road.

• Its direction was constant.

• Its velocity was constant.

29. An astronaut travels from Earth to the Moon. The gravitational field strength on the Moon is less

than that on Earth.

How do the mass and weight of the astronaut on the Moon compare with his mass and weight on

Earth?

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30. A load is applied to a copper wire. The graph shows how the extension changes as the load

changes.

Which labelled point on the graph is the limit of proportionality?

• A

• B

• C

• D

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. Thermal energy is supplied to four different blocks. The gain in thermal energy is the same for

each block.

The temperature increase produced is shown on each block.

Which block has the greatest thermal capacity?

• A

• B

• C

• D

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. The diagram shows two rays of light that have passed from an object through a thin converging

lens. An image is formed.

Which statement about the image is correct?

• It is inverted and real.

• It is inverted and virtual.

• It is upright and real.

• It is upright and virtual.

36 The diagram represents a sound wave of wavelength λ in air. A compression and a rarefaction of

the wave are labelled.

What does the length R equal, and in which labelled direction do the air particles vibrate as the

sound wave passes?

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37. Three charged balls P, Q and R are suspended by insulating threads. Ball P is negatively

charged.

What are the signs of the charges on ball Q and ball R?

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