I ' ·. I . :.. c I (:)2010 U1 P1 CAPE.,;Physics 1. Which of the quantities below are dimensionless? I. 2. 4. 1 IL III. IV. Rela:tive density Force Length Refractive index (A) (B) (C) (D) I and II only II and III only I and IV only II and IV only .. 5. In determining the density of a cube a student records the following measurements: m . l' 6. The student then uses the equation p = - (A) (B) (C) 6 x 10 6 x 1026 6 x 1027 (D) 6 x 1028 ':\ i' must be zero cannot be zero is negative may or may not be zero 1· . i' :'~ ii . l ,'. A tennis ball is given a horizontal!vrlOfity of 8 mis when it is hit at a height L8:m'above the ground. It is in the air for IS (A) (B) (C) (D) 0.6% 7% 14% 40% i I If the average velocity of a particle is zero, then the distance it has travelled . to deteqnine the density of the cube. The percentage error in the calculated value of p (A) (B) (C) (D) I 25 (A) (B) (C) (D) Length of side, l = 3.0 ± 0.1 cm Mass Of cube, m = 12.5 ± 0.5g 3. The molar mass of aluminium is rp g:and its density is 2700 kg m.J. The nl).rnper of .aluminium atoms in a piece of al~ujn with a volume of LO m 3 is approximate!~ I , ~.· I '\ 0.37 s 0.61 s 2.98 s 8.89 s I1 'i1 ; ,i P: kg m., Q: kg ms.z R: kg 2 m.J s·' represent? R (A) (B) (C) (D) Distance . Speed Acceleration Force J I ' .. , '' ., i I .l . Given that the following quantities have the base units shown What quantity does PQ ·.I " -4- ·, Item 7 refers to the following information. Two identical masses are attached by a string, which passes over a frictionless pulley. :> ' ·, L ' 1: 'i 1' j l '" All the graphs below are drawn to the same scale. 1.:1 Which pair of graphs below represents the acceleration of Body P and the acceleration of Body Q? a a (A) Q p time time \, i I I ' ji i a i' I a Q 11 p [: l'(B) • 1< ';· ,, time l:t: time 1 1 I a a Q p I \(C) time time a a p Q ,, {D) 1-------.. time GO ON TO TIIB NEXT PAGE .. , .. , -5- 8. Which of the following pairs of conditions is true for an inelastic collision? 10. .A man of mass 50 kg stands on a.':~:.i, bat. · oom scale (balance) in an elevator. If~e el '. at or accelerates upwards to 2 m s·'. What is the reading on the scale? · Momentum Kinetic Energy (A) conserved conserved (A) IOON (B) not conserved conserved (B) 390N (C) conserved not conserved (C) 490N (D) 590N (D) not conserved not conserved I I 9. Which of the following equations gives the correct relationship between impulse and momentum? (C) (D) 12. It moves with the same velocity as ~ "' . ·:.\ the earth. :, ,f,f JI Its geographical location\c]!J.~s as the earth rotates. : ,\ ~! , Its acceleration is zero. ' ; · ' ; Its angular velocity is equal . that of the earth. · • (A) I (A) (B) .: Which of the statements belbw·l3EST I ' ; describes the motion of a geqstat~opary satellite? ' . · 11. • [mpulse=momentum Impulse= rate ofchange of momentum Iinpulse =change in momentum Impulse=(momentum)' (B) (C) (D) 6 A man with a parachute jumps from a plane. He opens his parachute after 2.5 se<0onds. Which of the graphs below BEST represents how his vertical acceleration a, could vary with time t, during the first 6 seconds ofhis fall? (A) a (B) I (C) 2 3 4 5 a t 6 (D) a ., I 2 3 4 5 6 I 2 3 4 5 6 a .. , t -6A body falls from a cliff 80 m above the ground. If it loses 25% of its energy overcoming friction, what is its velocity on impact with the ground? [g = 9.8 N kg· 1] 3. 16. When a particle oscillates in a straight line with simple harmonic motion, the period of the oscillation is (A) (A) (B) (C) (D) 1 19.8 m s· 28.0 m s· 1 34.3 m s· 1 39.6 m s· 1 (B) (C) (D) If mis the mass of an object and E its kinetic energy, then its linear momentum is 17. directly proportional to the displacement ofthe particle from the origin directly proportional to the acceleration of the particle independent of the frequency of oscillation independent of the amplitude of oscillation ' I The displacement of a particle undergoing simple harmonic motion is given by (B) x = 8sin 0.47l't The frequency of oscillation of the paiticle is (A) 15. (B) 0.2Hz 0.4Hz (C) (D) 5Hz 8Hz A student of weight 500 N is planning a trip up to the peak of Blue Mountain. From her , starting point, this will involve an increase in , . altitude of 1800 m, She buys "high calorie" .:' energy bars which contain 1000 kJ ofenergy. 1 Assuming her body to be 10 % efficient, how \ , many bars will she need to eat for the necessary gain in altitude? r I (A) 1 (B) , (C) 9 I I ! I I 1~) 90 900 GO ON TO Tf:l\ENEXT PAGE ... ·1 -7Item 18 refers to the following diagram. 20. /String Which of the following events is as.sociated with transverse waves but NOT )ongitudinal waves? ii A p B Interference (B) Polarisation (C) Reflection (D) Refraction ' t c Driver D 18. (A) 21. The diagram shows a Barton pendulum system used to demonstrate resonance. Which pendulum would swing with the GREATEST amplitude when the driver 0 is pulle9 aside and released? Item 19· refers to the diagram below which shows a snapshot of a rope as a transverse wave passes along it from left to right. I '[ ·i _j I ·I i! I, 1i Sound waves with a frequencx <if . 00 Hz travel through a medium with' a! s~. ~~.ed o. f 400 m s· 1• What is the phase difJfirence between two points which are 3 m apart in the direction of the wave? Jr (A) -rads 4 (B) -rads 2 Jr i:· (C) -!i' 2 -Jr rads 3 '' ·1 I (;: (D) 19. Which pf the following correctly shows the directions ofthe motion ofpoints X, Y and Z on the rope? x y z (A) .J.. ---+ t (B) .J.. t .J.. (C) t t t (D) ---+ ~ ---+ Jr :.: rads I ' 22. 4 ' ·The following ~placement-po~i~o1 g.raph represents a stationary wave at two ~erent I1 ": '. ., instants oftime. Displacement · '' ' j Position What does the distance PQ reprbse.iiit? i . i (A) (B) (C) (D) Halfthe velocity Half the period Half the wavelength Halfthe amplitude I I ' i.; :l. ':t·.!:., -+ft 1· ) .. , - 8- I: A wave of amplitude 10 cm has intensity I,. Another similar wave has an amplitude of 5 cm and intensity I,. What is the value of 26. 11 12 . -? (A) (B) (C) (D) . (A) (B) (C) (D) 2 4 20 50 27. Item 24 refers to the following graph which shows a stationary wave on a string. Amj ).titude J, r 0.60 0.80 1.25 1.50 III. Blue light is used instead of red, The screen is moved away from the I slits. · The slits are brought closer togetl1er.. (A) (B) (C) (D) I only I and II only II and III only I, II and III 38. R J ' I\ I 31 For a double slit interference pattern using! light, the separation of fringes will increase if I. II. i' i, As light travelling in air enters a medium its speed changes to 2.4 x 1O" m s· 1• The refractive index of the medium is p Distance I Where on this stationary wave does an antinode exist? (A) (B) !(C) · (D) 25. An object is placed3 cm in frontofadiverging lens of focal length 5 cm. Where will the image be found? (A) About 2 cm in front of the lens (B) About 2 cm behind the lens (C) About (D) I . About -cm behmd the lens ·.Two light sources are said to be coherent. The waves from them must therefore have ';' :.1· .l !! '(B) +I I \ !' \ \ -~. (C) ' .,, 1 ! \, Ponly Qonly Sonly PandRonly 28. I ~D) I i the same frequency and a constant phase difference the same amplitude and a constant phase difference the same wavelength and no phase difference the same velocity and a constant path difference ~cm in front of the Iens 2 2 I I GO ONTO THE NEXT PAGE 02138010/CAPE2010 .. , ., 39. :I. ' - 9! : i ' l. IL Ill. (A) (B) (C) (D) 30. 34.0 - - - - - I' 2.0 0 100 Temp/°C I 32. ! The graph show's how the lel\i.gth of the mercury in a thermometer chan~~siwith temperature. The temperatfr~· :"1hich corresponds to a length of I 0.0 qm 1s : (A) (B) (C) . 'I ·~·fheat What is the name given to the amblint energy needed to chitnge I kg bi w ·.ter at I 00 °C into steam at I 00 °C? . .. 5cm 25cm 30cm 150cm Which instrument is MOST suitable for measuring rapidly changing temperature? 15 °C 20°c 25°C 30°C I , (A) (B) (C) (D) (A) (B) (C) (D) .. , A converging lens always forms an image biggerthan the object. An object placed in front of a converging lens can form a virtnal IIllage. A diverging lens can form a real image of an object placed in front ofit. The near point of a defective eye is 30 cm from the eye. The normal near point is 25 cm from the eye. The focal length of the lens needed to ·correct this defect is ' (D) 31. ' Length/cm !only Uoniy I and Ill only _ ll and III only . Item 32 refers to the following g~ap!p.. Which pf the following statements regarding lenses rs/are correct? 29. 1 I : :. ; • 'I 33. (A) (B) (C) (D) Molar heat capacity Specific latent heat of fusion Specific heat capacity S pecificlatent heat ofvaporisation The resistance thermometer The mercury-in-glass thermometer The thermocouple The alcohol-in-glass thermometer .. , ., - 10 - i~ \In an electrical method for determining the 36. i \specific heat capacity ofa metal, the fullowing \ Ireadings were obtained r: . ,mass of metal \supply voltage \current 'time for which heat supplied \~~~peraturerise of metal 2 kg 240 V 3A 20 s 10 °C ~at is the specific heat capacity ofmetal? .tA) A composite conductor with materials of thermal conductivities k, k!2, k/3 has insulated sides. Heat is transferred through it from left to right as shown in the diagram below. Q Each material has the same thickness. Which ofthe following diagrams BEST describes tl1e temperature gradient of the composite wall? (B) ti {A) I (C) !' ~ '·, I '1 ,l·j~) 1 • i .1\:: t, t, t. x- x- ' :'.- - 'Ii ,.. , - 'j f 1' ' ' f l 35:"!',:''' ,: Water falls from a height of 500 m. What is I ':l ; e rise in temperature ofwater at the bottom ''\ ·. \ · all of the energy gained is converted to J • ternal energy in the water? . i:. ) ) ( ) (b) ti - - {B) t, ---- t,+--+--~1.-----l l.17K 0.19K 0.24K 0.49K ti {C) -- -- -- t, t, t. •i i ~ 'I I I '!; f,. I• 1 I (D) ti -- -- -- t, t, t, GO ONTO THE NEXT PAGE '." ., .., .I 37. - II : ' A cqntractor builds an office window of 40. height I 50 cm and width ZOO cm with a glass pane ofthickhess 0.5 cm. The temperature difference across the glass is I 5 K and the thermal conductivity of the glass is 0.65W m·' K· 1• Calculate the heat energy per second conducted through the window. (A) j > (D) ·r 38. A small black sphere has an absolute temperature T 1• It is hung in the centre of an enclosure whose walls are at a higher absolute temperature T,. The net rate ofgain of .thermal energy by the sphere is proportional to 39. (B) (C) (T,)' (T2) 4 .,- (T/ (D) (T2 - T/ P&· ., (A) (D) 'j ~c, +c~+ ... CN ' c12 +cff+ ..... +c~ (ci'+cJ+ ..... +c~f N I:! i i 41. ' (T,)• A gas contains N molecules. \Tpe ;~peeds of the molecu'.es are Cl'. C2 ... , f(hich of the followmg equat10ns cap' \br··!used to determine the r.m.s speed oftb.e:m . ecules? N ' (A) I (B) 1.63 kW 5.85kW 163kW 585kW (B) (C) ' 1 What is the total pressure on, the base of a container of cross-sectional area \P,m'. if it is filled with ethylene gylcb~ ci~ density . 'I " 1120 kg m" up to a depth of3 .D µi?j [Atrn. (A) (B) (C) (D) Avogadro's number is the number of molecules in ' press~ i~o t: IO' Pa] 3.3 x 104 Pa 6.7 x 104 Pa I.Ox JO' ,, Pa 1.33 x 10' Pa Item 42 refers to the following,diagram. (A) (B) (C) (D) G-A one litre of gas atN.T.P. one mole of a gas one gram ofa gas one kilogram of a gas (..,__)- - - - - ; - - v i i. - + - - - - - [ - - - - - ' - ,~, : 42. The material shown has length,/, and crosssectional area A. When a for4 I;', is applied to the material it causes an extension e, in the material. Which ofthe followir\g~xpressions can be used to determine the Yc:rnpg~odulus of the material? · · \ · ! - 12 - 43. '• Four different liquids are poured into identical measuring cylinders. The diagrams show the heights of the liquids and their densities. Which liquid exerts the LARGEST pressure on the base ofits measuring pylinder? 2 g/cm3 1.6 g/cm 3 (B) -~--- 20cm i :' lOcm .' 1.2 g/cm3 C) 0.7 gfcm 3 (D) ~j,§ ~~~ ~~ 40 cm 30cm ~!~}l I i •.;I i: I l rem 44 refers to the following graph. ' I'. Item 45 refers to the following diagram. ~tress · 1: FIN .·: ! 60 ----------30 ------ 1 e/mm i 44. This graphisMOSTlikelyto apply to (A) (B) (C) !· (D) ~ I 2 ~ I f. ' steel glass fibre an elastic band polythene sheet j i'' li l II 45. The figure above shows the force-extension graph ofa wire. How much work is done in stretching the wire from an extension of I mm to2mm? (A) (B) (C) (D) 0.015 J 0.030J 0.045 J 0.060J rf ~OU FINISH BEFORE TIME IS CALLED, CHECK YOUR WORK. ON fHIS TEST. ' I . \ .. , .. ,