CHAPTER TEST REVIEW, LESSONS 4-1 TO 4-5

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1 IB PHYSICS Name: DEVIL PHYSICS Perio: Dae: BADDEST CLASS ON CAMPUS CHAPTER TEST REVIEW, LESSONS 4- TO 4-5 S. Waer waves a he surface of a pon pass a floaing log of lengh L. The log is a res relaive o he bank. The iagram shows wave cress a one insan. L The number of cress passing he log per uni ime is N. The spee of he waer waves relaive o he log a res is A. L (N ). 7 B. L (N ). 6 C. L (N). 7 D. L (N). 6 S3. Graph P shows how he isplacemen a one poin in a wave varies wih ime. Graph Q shows how he isplacemen in he same wave varies wih isance along he wave a one paricular ime. Which one of he following epressions gives he spee of he wave? Graph P isplacemen ime A. B. C. D. 3 Graph Q isplacemen 3 isance Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page of 3

2 S7. The iagram below shows ocean waves incien on a sone barrier proecing boas anchore behin i. The boas coul sill be a risk of amage by waves mainly as a resul of Waves A. refracion. B. saning waves. C. iffracion. D. reflecion. S69. The phenomenon of iffracion is associae wih A. soun waves only. B. ligh waves only. C. waer waves only. D. all waves. S3. Which iagram bes shows iffracion of plane wavefrons a a single sli? Barrier Boas A. B. C. D. S67. Plane parallel wavefrons are incien on an obsacle. Which of he following iagrams bes shows he iffracion of he waves aroun he obsacle? Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page of 3

3 A. B. C. D. S56. A sring is hel horizonally wih one en aache o a fie suppor. Two pulses are creae a he free en of he sring. The pulses are moving owars he fie suppor as shown in he iagram below. sring fie suppor Which one of he following iagrams is a possible subsequen picure of he sring? A. B. C. D. S. Two paricles X an Y are siuae a isance wih ime of he isplacemen of X is shown below. apar on a saionary wave of wavelengh λ. The variaion X Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 3 of 3

4 Which one of he following correcly shows he variaion wih ime of he isplacemen Y of paricle Y? A. Y B. Y C. Y D. Y S37. For a saning wave, all he paricles beween wo successive noes have he same A. ampliue only. B. frequency only. C. ampliue an frequency. D. frequency an energy. S43. Which one of he following is correc for ransfer of energy along a saning wave an for ampliue of vibraion of he saning wave? Transfer of energy along a saning wave Ampliue of vibraion of he saning wave A. None Consan ampliue B. None Variable ampliue C. Energy is ransferre Consan ampliue D. Energy is ransferre Variable ampliue S5. The iagram below shows a ransverse wave on a sring. The wave is moving from righ o lef. X Y upwars irecion of wave lef righ ownwars Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 4 of 3

In he posiion shown, poin X has zero isplacemen an poin Y is a a posiion of maimum isplacemen. Which one of he following gives he subsequen irecion of moion of poin X an of poin Y? Poin X Poin Y A.

5 In he posiion shown, poin X has zero isplacemen an poin Y is a a posiion of maimum isplacemen. Which one of he following gives he subsequen irecion of moion of poin X an of poin Y? Poin X Poin Y A. lef lef B. upwars upwars C. ownwars lef D. ownwars upwars S7. One en of a long sring is vibrae a a consan frequency f. A ravelling wave of wavelengh an spee v is se up on he sring. The frequency of vibraion is ouble bu he ension in he sring is unchange. Which of he following shows he wavelengh an spee of he new ravelling wave? Wavelengh Spee A. λ v B. λ v C. v D. v S75. Which saemen is rue for saning (saionary) waves? A. All poins in he wave vibrae in phase. B. There is no energy in a saning wave. C. The wavelengh of he wave is he isance beween ajacen noes. D. Neighbouring poins in he wave have ifferen ampliues of vibraion. S8. The graph below shows he variaion wih ime of he isplacemen of a paricle unergoing simple harmonic moion. Which graph correcly shows he variaion wih ime of he acceleraion a of he paricle? Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 5 of 3

6 S8. A wooen block is a res on a horizonal fricionless surface. A horizonal spring is aache beween he block an a rigi suppor. The block is isplace o he righ by an amoun X an is hen release. The perio of oscillaions is T an he X oal energy of he sysem is E. For an iniial isplacemen of which of he following shows he bes esimae for he perio of oscillaions an he oal energy of he sysem? Perio A. T B. T C. D. T T Toal energy E E 4 E E 4 S3. This quesion is abou waves an wave moion. (a) Describe, by reference o he propagaion of energy, wha is mean by a ransverse wave. Transverse wave () Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 6 of 3

7 (b) Sae one eample, oher han a wave on a sring, of a ransverse wave. A ransverse wave is ravelling along a sring ha is uner ension. The iagram below shows he isplacemen of par of he sring a ime =. The oe line shows he posiion of he sring when here is no wave ravelling along i. isplacemen / cm isance along sring / cm (c) On he iagram above, raw lines o ienify for his wave (i) he ampliue (label his A); (ii) he wavelengh (label his λ). () The perio of he wave is. 3 s. Deuce ha he spee of he wave is 5 m s. () (e) Using he aes below, raw he isplacemen of he sring when = 3. 4 s. (The isplacemen of he sring a = is shown as a oe line.) Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 7 of 3

8 isplacemen / cm isance along sring / cm S63. Waves on a sring (3) A ravelling wave is creae on a sring. The graph below shows he variaion wih ime of he isplacemen y of a paricular poin on he sring. Graph y / mm / ms. The variaion wih isance of he isplacemen y of he sring a = is shown below. Graph y / mm / cm.. (a) Use informaion from he graphs o calculae, for his wave, (i) (ii) he wavelengh;... he frequency;... () Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 8 of 3

9 (iii) he spee of he wave.... (b) The wave is moving from lef o righ an has perio T. (i) On graph, raw a labelle line o inicae he ampliue of he wave. T (ii) On graph, raw he isplacemen of he sring a. 4 S. A source of soun emis waves of wavelengh λ, perio T an spee v when a res. The source moves away from a saionary observer a spee V, relaive o he observer. The wavelengh of he soun waves, as measure by he observer is A. λ + vt. B. λ vt. C. λ +VT. D. λ VT. () S36. The spee of soun in sill air is c. A source of soun moves away from an observer a spee v. Wha will be he spee of soun as measure by he observer? A. c B. c + v C. c v D. v c S49. A poin source is moving a a consan spee in a sraigh-line owars he righ an emis soun waves of consan frequency. The spee of he source is less han he spee of soun. Which of he iagrams correcly shows he wavefrons emie by he source? A. B. C. D. S59. A saionary source emis soun of frequency f. An observer is moving owars he source a consan spee along he pah inicae by he oe line. The observer passes very close o he source a ime T. Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 9 of 3

10 saionary source observer Which one of he following graphs bes shows he variaion wih ime of he frequency f hear by he observer? A. f B. f f f T T C. f D. f f f T T S64. A police car, souning is siren, is ravelling a consan spee owars a saionary observer. The soun emie by he siren is of consan frequency. The frequency of he soun as hear by he observer is higher han ha hear by he river of he police car. The reason for his is ha A. he wavefrons receive by he observer are closer ogeher han he wavefrons receive by he river. B. he spee of he wavefrons is greaer as measure by he observer han by he river. C. he spee of he wavefrons is less as measure by he observer han by he river. D. he wavefrons receive by he observer are furher apar han he wavefrons receive by he river. S68. Which of he following is a correc escripion of he Doppler effec? A. Change in frequency of ligh ue o moion of he source of ligh. B. Change in frequency of ligh ue o relaive moion beween he source of ligh an he observer. C. Change in observe frequency of ligh ue o relaive moion beween he source of ligh an he observer. D. Change in observe frequency of ligh ue o change in velociy of he source of ligh. S8. Soun of a consan frequency f is being emie by a soun source. An observer O ravels in he irecion shown a a spee of. v where v is he spee of soun. observer O soun source Which of he following gives he relaionship beween f an he frequency f of observe soun? Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page of 3

11 A. f =.f B. f < f <.f C. f =.9f D. f > f >.9f S3. Wha change, if any, occurs in he wavelengh an frequency of a ligh wave as i crosses a bounary from air ino glass? Wavelengh Frequency A. Decreases Decreases B. Decreases Unchange C. Increases Increases D. Increases Unchange S5. Ligh is incien on an air-glass bounary as shown below. P Q R S air glass Which one of he following is a correc saemen of Snell s law? A. sin P = consan sin R B. sin P = consan sin S C. sin Q = consan sin R D. sin Q = consan sin S S6. Waves of frequency f ravel wih spee c in air an ener a meium M of refracive ine.5. Which of he following correcly gives he frequency an spee of he waves in he meium M? frequency spee A. f c.5 B. f.5c C..5f c D. f.5 c S7. The iagram below shows plane wavefrons of a wave ha is approaching he bounary beween wo meia, X an Y. The spee of he wave is greaer in meium X han in meium Y. The wave crosses he bounary. Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page of 3

12 bounary meium X Which of he following iagrams is correc? A. B. meium Y meium X meium Y meium X meium Y C. D. meium X meium Y meium X meium Y S4. The variaion wih ime of he separae isplacemens of a poin in a meium ue o wo waves is shown below. The waves are superpose. Which of he following iagrams shows he variaion wih ime of he resulan isplacemen of he poin in he meium? +a +a a a +a a Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page of 3

13 A. B. +a +a a a C. D. +3a +3a +a +a +a +a a a a a 3a 3a S47. A ba approaches an insec of wing span lengh. The ba emis a soun wave. The ba eecs he insec if he soun is reflece from he insec. refece waves incien waves The insec will no be locae if A. he insec s spee is less han he spee of he soun wave. B. he insec s wing bea frequency is greaer han he frequency of he soun wave. C. he lengh is much greaer han he wavelengh of he soun wave. D. he lengh is much smaller han he wavelengh of he soun wave. Tsokos Chaper Tes Review Lsn 4- To 4-5.Doc Upae: -Apr- Page 3 of 3

Semester Review Session

Semester Review Session Semeser Review Session We will have a semeser review session on Wednesda, 1/10 a -4pm, here in room MPHY 03. If ou have a quesion(s ha ou would like me o go over, please drop me an email wih he problem