0625_s18_qp_41.pdf

# By comparison with a wind farm state one advantage

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By comparison with a wind farm, state one advantage and one disadvantage of running a power station using oil. advantage ................................................................................................................................. ................................................................................................................................................... disadvantage ............................................................................................................................ ............................................................................................................................................... [2] [Total: 8]

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4 0625/41/M/J/18 © UCLES 2018 3 A rectangular container has a base of dimensions 0.12 m × 0.16 m. The container is filled with a liquid. The mass of the liquid in the container is 4.8 kg. (a) Calculate (i) the weight of liquid in the container, weight = ........................................................... [1] (ii) the pressure due to the liquid on the base of the container. pressure = ........................................................... [2] (b) Explain why the total pressure on the base of the container is greater than the value calculated in (a)(ii) . ................................................................................................................................................... ............................................................................................................................................... [1] (c) The depth of liquid in the container is 0.32 m. Calculate the density of the liquid. density = ........................................................... [2] [Total: 6]
5 0625/41/M/J/18 © UCLES 2018 [Turn over 4 (a) Describe the movement of the molecules in (i) a solid, ........................................................................................................................................... ....................................................................................................................................... [1] (ii) a gas. ........................................................................................................................................... ....................................................................................................................................... [2] (b) A closed box contains gas molecules. Explain, in terms of momentum, how the molecules exert a pressure on the walls of the box. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................... [4] [Total: 7]

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6 0625/41/M/J/18 © UCLES 2018 5 (a) A ray of light in air is incident on a glass block. The light changes direction. State (i) the name of this effect, ....................................................................................................................................... [1] (ii) the cause of this effect. ....................................................................................................................................... [1] (b) Fig. 5.1, drawn to full scale, shows a thin converging lens of focal length 3.5 cm. 1.0 cm 1.0 cm O lens Fig. 5.1 (i) On Fig. 5.1, mark each of the two principal focuses and label each with the letter F. [1] (ii) An object O of height 4.4 cm is placed a distance of 7.5 cm from the lens. On Fig. 5.1, draw rays from the tip of the object O to locate the image. Draw and label the image. [3] (iii) Determine the height of the image. height of the image = ........................................................... [1] (iv) State and explain whether the image is real or virtual. ........................................................................................................................................... ....................................................................................................................................... [1] [Total: 8]
7 0625/41/M/J/18 © UCLES 2018 [Turn over 6 (a) Fig. 6.1 shows wavefronts approaching a gap in a barrier. wavefront barrier Fig. 6.1 (i) On Fig. 6.1, draw three wavefronts to the right of the barrier. [2] (ii) Fig. 6.2 shows the gap in the barrier increased to five times the gap in Fig. 6.1. wavefront barrier Fig. 6.2 On Fig. 6.2, draw three wavefronts to the right of the barrier. [2]

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8 0625/41/M/J/18 © UCLES 2018 (b) Describe, with a labelled diagram, an experiment using water waves that shows the reflection of wavefronts that occur at a straight barrier. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................... [4] [Total: 8]
9 0625/41/M/J/18 © UCLES 2018 [Turn over BLANK PAGE

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10 0625/41/M/J/18 © UCLES 2018 7 (a) State, in terms of their structure, why metals are good conductors of electricity. ................................................................................................................................................... ............................................................................................................................................... [1] (b) A cylindrical metal wire W 1 , of length l and cross-sectional area A , has a resistance of 16 Ω .
• Fall '08
• MR TAN CL
• Past Papers, UCLES

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