Physics unit 4 Waves

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SPH4U

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Electrical Engineering

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Feb 20, 2024

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(\X Onta~> Virtual Sch,,ol ~PH4U UNIT 4 TEST- WAVES . Knowledge Communication Thinking Application 10 10 10 Knowledge Which of the following statements about waves is correct? a) Longitudinal waves propagate only through solids. 20 Transverse waves displace articles i • ction of wave trave c) Electromagnetic waves require a medium for propagation. d) Mechanical waves are a type of electromagnetic wave. The distance between two consecutive crests or troughs in a wave is called: @Wavelength:=) b) Frequency c) Amplitude d) Period Which of the following wave properties remains unchanged when a wave moves from one medium to another? a) Wavelength cJ))Fre~enV c) Speed d) Amplitude The bending of waves around obstacles or through openings is known as: a) Reflection b) Refraction @ Diffraction ) d) Interference L

Which of the following wave phenomena involves the superposition of two waves to produce regions of constructive and destructive interference? a) Diffraction . cb) Standing wave~ c) Polarization d) Doppler effect The phenomenon of an object resonating at its natural frequency when exposed to an external periodic force is called: a) Refraction (:bj Resonance) c) Diffraction d) Interference Vvhich type of wave does not require a medium for propagation? a) Longitudinal wave b) Mechanical wave c) Transv d) Electromagnetic wave The speed of sound in a medium depends on: a) Frequency of the sound wave b) Wavelength of the sound wave c) Intensity of the sound wave (aJ Properties of the medium:) Which of the following statements about the Doppler effect is true? a) It affects onl sound waves. causes a chan e in the fre uenc of a wave source. c) It occurs only with stationary wave sources. d) It is not applicable to light waves. What is the relationship between the frequency and period of a wave? a) They are directl ro ortional. e are inverse! proportional. c fhey are not related. d) 1 he relationship depends on the wave type.

Explain the difference betvveen constructive and destructive interference in waves. fc.o"' ~..\-<J l•t"~ ... • I oLJ_,.J..r~ w~ ".2. ( ...... .,WW\~ °'~ "'""'f \;.\v~ ("th>jk o-<"'V o-\:_j ru.J?, ~s., I ~i'J w~~.{ o ( -l~ ~'t"YV-- ;,.._ \?~$c--- ( ..I-~ ( f...,._i...5 o.<--6 , · "' .,.___ \_..l I e-1' y A f'\r. Briefly describe the main characteristics of a longitudinal wave. lo~·,\,d~" .. \ \r.)#-v,., : - °'- w~ ~\...: ..... \-. ..\-k., ~.iJn J .S..:- J. r"t.l~,\J~ ;~ ~~r~k.,l -+t, -fL_, J~tu-/-i<><l csf lk, ~~J.. -1+ f N'~:P''~ <J-..,(v r \'::> Sov<'d

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How does the speed of sound change as it travels through a medium with higher temperature? ,~ ~.) .f 5od''I ~ .... o,t"':,s (,"«j:) ·,, ·~ ~{\) O<"\ \.v..--\. ---rk, .si,..,"~ 'S~ -fQ.~~ -.\\,., ;,,... ~"'""" "' ~).._. ~r.:"'\v.-c., ;-;<\C,,., -\l.v ~"" s..:.} t> .so 1~..\ ~"'- .\ • t ~\\ -\.\..-., 5o ~}-al 5~) \,,.¢lA ~Sk~• What is the principle behind how polarized sunglasses reduce glare? '? 0) ~--- ; 2 .. .J '.:n,.-, j I c-.SS-d, j , ... bj bloc--k:7 hor,~+Ll\ \~\\-.-+ ~, v~c_.k. °'~ -\le: ~v-'!) • \_ -J .\-\-..J J lo-,-..., .

Thinking In a physics lab experiment, a student uses a ripple tank to study the interference pattern of water waves. The student generates two coherent wave sources with a frequency of 2 Hz. The sources are separated by a distance of 0.6 meters. The waves are recorded on a screen located 2.5 meters away. Determine the distance between the adjacent bright fringes on the screen. 5"""" ;. '2.. ~'L 2. 5 ,-, 6. 6 """' A? V A-= ( \J-= >J vD A~ - clj _.JD - -=----- d :;: ~\ ¼ :_)( 2.-.SM) CJ - l,r'\ --z g ~33M) - - ¾ ., J. 3,\-.,.,_v~ { .e,_J~c,u,~~ d,;~ ; s "'- (='t'°..,_, .,,,,,jJ j fl, T3 ""

- --- -· Application A steel rod, 1.5 meters in length, is clamped at one end. It is set into longitudinal vibrations, and a standing wave is formed with three anti nodes. If the wave speed in the rod is 2000 m/s, calculate the fundamental frequency and the first two harmonics. ,)..vr..s : ½ -Ji__.=: I . Sr,... 3 :: A W"'-~,-J.-,-- 4o:7~ (~0\-) L = --:z.LS~ 2. ..A 2 L -z 3t"-\ f) fuf"'~(r;-r)} 1-, ,.kc,i,Ad +k:-"'J ks .3, ,'f' ~,o ~\A..- ~v'\.\.: "'o ck..1) >-- 2~ - O. S,,"'- ( \,.lO-vt.-1 ~4- of ~<~.., .... :_") _/ - :L -.A tbb. b1\-\ z ( 1;~\-°'\) J~Y A - 1"' (~'1~ "'4~(~ ~,-~·c:) = 2cXo \\-i. (f..-)t \r-c.(-1',~:e-)

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A guitar string is plucked, producing a sound wave with a frequency of 440 Hz and a wavelength of 0.75 m. Calculate the speed of the wave as it travels through the guitar string. V :=__/ J__ D \\-z_ :x O ,"15,.-,) - 33or-ls I i

A sound wave with a frequency of 800 Hz is produced by a tuning fork. If the wave travels through air at a speed of 340 m/s, what is the wavelength of the sound wave? "~J A _Ads = V / .3Llo /.J - - 800~2.

A student is standing 500 meters away from a cliff. They shout towards the cliff, and the echo returns after 2.5 seconds. Calculate the speed of sound in the air, assuming it travels back and forth between the student and the cliff. ~\ ct~'\(JL = 2)< Seo 2. I OCbfYJ Ol" 1 {~

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