Physics unit 4 Waves

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Humber College *

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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

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-,-..., .

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