Mibvunzo yemuenzaniso weDoppler Effect

Mienzaniso gumi nemana yemibvunzo yeDoppler Effect

1. Kubva muchirevo chinotevera:
(1) P inosvika S iyo isingachinji
(2) S inosvika P iyo isingachinji
(3) P naS vanoswedera pedyo
(4) S naP zvinofamba nekumhanya kwakafanana
Kana P (muteereri) akanzwa ruzha nefrequency yakakwira kupfuura frequency inoburitswa naS (tsime), saka chirevo chakarurama ndechekuti...
A. (1), (2) uye (3) chete
B. (1), (2), (3) uye (4)
C. (1) uye (3) chete
D. (1) uye (4) chete
E. (2) uye (4) chete
Kukurukurirana

Kuti tiratidze izvi nemasvomhu, tinotanga taita maverengero sezvakakurukurwa pazasi. Data rinotevera ifungidziro.
Kumhanya kwemuteereri (v)_p) = 60 m/s, kana muteereri akanyarara saka vp = 0
Kumhanya kwekwakabva ruzha (v)_s) = 40 m/s, kana ruzha rwuri panzvimbo imwe chete, saka kana rwuri pari kubva ipapo, zvinodarika = 0
Kumhanya kweruzha (v) = 340 m/s
Ruzha rwekumhanya (f) = 1000 Hertz

P inosvika S iyo isingachinji
vp yakanaka kana muteereri akasvika panobva ruzha
Ruzha rwunobva rwakanyarara saka v_s = 0

S inosvika P iyo isingachinji
vs negative kana inzwi riri kusvika kumuteereri
Muteereri akanga akanyarara zvekuti v_p = 0

P naS vanoswedera pedyo
vp yakanaka kana muteereri akasvika panobva ruzha
vs negative kana inzwi riri kusvika kumuteereri

S naP zvinofamba nekumhanya kwakafanana
Kana inzwi rinobva uye muteereri zvikafamba nekumhanya kumwe chete, Doppler effect haiitike.
Mhinduro chaiyo ndiA.

2. Muteereri anomira padivi penzwi rine frequency ye684 Hz. Rimwe nzwi rine frequency ye676 Hz rinofamba richienda kumuteereri nekumhanya kwe2 m/s.^-1Kana kumhanya kwekupararira kweruzha mumhepo kuri 340 ms^-1, ipapo kaiti inonzwikwa kakawanda nemuteereri ndeiyi...
A. 2 Hz
B. 3 Hz
C. 4 Hz
D. 5 Hz
E. 6 Hz
Kukurukurirana
Zvinozivikanwa kuti:
Kuwanda kweruzha rwunobva 1 (f)₁) = 684 Hz (yakanyarara)
Frekuensi manyuko eruzha 2 (f)₂) = 676 Hz (inofamba)
Kumhanya kweshoko rinobuda 2 (v)₂) = 2 m/s (ichienda kune muteereri)
Kumhanya kweruzha mumhepo (v) = 340 m/s
Akabvunzwa: Kuwanda kwekaiti inonzwiwa nemuteereri
Mhinduro:
Kutanga verenga kuti ruzha rwunonzwikwa kakawanda sei kubva panobva ruzha rwuri kuswedera pedyo nemuteereri.

Mafambiro eKite = musiyano uripo pakati pemafrequency maviri eruzha anonzwiwa nemuteereri = mapindiro eruzha rwusingachinji - mapindiro eruzha rwunofamba = 684 Hz – 680 Hz = 4 Hz.

Mhinduro chaiyo ndiC.

3. Ruzha rwunobuda nekufamba kwe20 m/ ^s kuenda kumunhu akamira. Ruzha rwunobuda ne380 Hz. Ruzha rwunobuda mumhepo i400 m/ ^s . Ruzha rwunobuda neruzha rwunonzwika nemunhu wacho ndi…

A. 400 Hz

B. 420 Hz

C. 440 Hz

D. 460 Hz

E. 480 Hz

Kukurukurirana

Zvinozivikanwa kuti:

Kumhanya kwekwakabva ruzha (vs ₎ = 20 ms ^-1

Kumhanya kwemuteereri (v _p ) = 0

Mafambiro eruzha (f) = 380 Hz

Kumhanya kweruzha (v) = 400 ms ^-1

Akabvunzwa: Kuwanda kwemafungu eruzha anonzwika

Mhinduro chaiyo ndiA.

4. Chitima A chiri kufamba nekumhanya kwe72 km/h uye chitima B chiri kufamba chakanangana nekumhanya kwe90 km/h. Mutyairi wechitima A anoridza muridzo nefrequency ye650 Hz. Kana kumhanya kweruzha mumhepo kuri 350 ms ^-1 , saka frequency inonzwikwa nemutyairi B kubva kumutsindo A ndeye...

A. 800 Hz

B. 740 Hz

C. 600 Hz

D. 540 Hz

E. 400 Hz

Kukurukurirana

Zvinozivikanwa kuti:

Kumhanya kwechitima A (v _A ) = 72 km/awa = 20 m/s, ichisvika pachitima B

Kumhanya kwechitima B (v _B ) = 90 km/awa = 25 m/s, ichisvika pachitima A

Ruzha rwechitima A (f _A ) = 650 Hz

Kumhanya kweruzha mumhepo (v) = 350 m/s

Mubvunzo: Kuwanda kwekunzwiwa neinjiniya B kubva kumuridzi A

Mhinduro:

Ruzha rwuri muchitima A uye muteereri ari muchitima B.

5. Ruzha rwunofamba nekumhanya kwe20 m/s ruchisvika kumunhu akamira. Ruzha rwunobva ruzha i380 Hz uye kumhanya kweruzha mumhepo i400 m/s. Ruzha rwunonzwiwa nemunhu wacho runosvika...

A. 400 Hz

B. 420 Hz

C. 440 Hz

D. 460 Hz

E. 480 Hz

Kukurukurirana

Zvinozivikanwa kuti:

Kumhanya kwekwakabva ruzha (vs ₎ = 20 m/s

Kumhanya kwemuteereri (v _p ) = 0

Mafambiro eruzha (f) = 380 Hz

Kumhanya kweruzha mumhepo (v) = 400 m/s

Akabvunzwa: Ruzha rwunonzwika kakawanda sei

Mhinduro:

Mhinduro chaiyo ndiA.

6. Mwana akamira akangomira achiridza muridzo nefrequency ye490 Hz akananga kumota iri kufamba ichienda kumwana sezvakaratidzwa pamufananidzo. Musiyano uripo pakati pemafungu akananga nemafungu anoonekwa kubva mumota i10 Hz. Kana kumhanya kweruzha mumhepo kuri 340 m/s, saka kumhanya kwemota...

A. 6,9 ms^-1

B. 5,8 ms ^-1

C. 4,4 ms ^-1

D. 3,8 ms ^-1

E. 3,4 ms ^-1

Kukurukurirana

Zvinozivikanwa kuti:

Ruzha rwekumhanya (f) = 490 Hertz

Kumhanya kweruzha mumhepo (v) = 340 m/s

Muteereri anosvika panobva ruzha kuitira kuti frequency yeruzha inonzwiwa ive yakakura kupfuura frequency yeruzha. frequency yeruzha = 490 Hertz uye frequency yekite = 10 Hertz saka frequency yeruzha inonzwiwa (f') = 500 Hertz.

Akabvunza: Kumhanya kwemota

Mhinduro:

Kumhanya kwemota iyi 6,9 m/s.

Mhinduro chaiyo ndiA.

7. Mudzidzi akamira parutivi pemugwagwa apo mota inofamba kubva pamudzidzi nekumhanya kwe40 m/s uku ichiridza hwamanda ine frequency ye300 Hz. Kana kumhanya kweruzha mumhepo kuri 360 m/s, saka frequency yehwamanda inonzwikwa nemudzidzi ndeye ….
A. 250 Hz
B. 270 Hz
C. 300 Hz
D. 350 Hz
E. 400 Hz
Kukurukurirana:
Fomura yemhedzisiro yeDoppler yeruzha :
f' = frequency yeruzha runonzwiwa nemuteereri (1/s = hz)
f = frequency yeruzha rwunoburitswa nekwarunobva (1/s = hz)
v = kumhanya kweruzha (m/s)
v_p = kumhanya kwemuteereri (m/s)
v_s = kumhanya kwekwakabva ruzha (m/s)
Mitemo yekuisa chiratidzo:
v inogara iri yakanaka
v_p zvakanaka kana muteereri akasvika panobva ruzha
v_p zvakaipa kana muteereri akasiya ruzha rwacho
v_s zvakanaka kana ruzha rwuri kubva kune muteereri
v_s zvakaipa kana ruzha rwuri kusvika kumuteereri
v_p = 0 kana muteereri akanyarara
v_s = 0 kana ruzha rwuripo
Zvinozivikanwa :
v_s = 40 m/s
v_p = 0
f = 300 Hz
v = 360 m/s
Akabvunzwa :
f'
Jawab :

Mhinduro chaiyo ndeiyi B.

8. Ruzha rwuri kufamba nekumhanya kwe30 m/s kuenda kumunhu akamira padivi pemugwagwa. Ruzha rwuri kufamba ne360 Hz uye kumhanya kweruzha mumhepo i380 m/s. Ruzha rwunonzwiwa nemunhu wacho...
A. 391 Hz
B. 400 Hz
C. 430 Hz
D. 440 Hz
E. 460 Hz
Kukurukurirana:
Zvinozivikanwa :
v_s = – 30 m/s
v_p = 0
f = 360 hz
v = 380 m/s
Akabvunzwa :
f'
Jawab :

Mhinduro chaiyo ndiA.

9. Muteereri anomira padivi penzwi rine frequency ye742 Hz. Rimwe nzwi rine frequency ye700 Hz rinofamba richienda kumuteereri nekumhanya kwe20 m/s. Kana kumhanya kwenzwi mumhepo kuri 340 m/s, saka frequency yekiti inonzwiwa nemunhu ndeye…
A. 2 Hz
B. 3 Hz
C. 4 Hz
D. 5 Hz
E. 6 Hz
Kukurukurirana:
Zvinozivikanwa :
f₁ = 680 Hz
f₂ = 700 Hz
v_s1 = 0 m/s
v_s2 = – 20 m/s
v = 340 m/s
Akabvunzwa :
kaiti?
Jawab :
Muteereri akamira padivi pekwakabva ruzha, saka zvinogona kugumiswa kuti kwakabva ruzha kwakamira kana tichienzanisa nemuteereri. Kuwanda kweruzha rwunonzwiwa nemuteereri kubva kwakabva ruzha rwakamira ndekwekuti:
742 hz
Imwe nzira yekutaura iri kufamba. Verenga huwandu hwenzwi rinonzwiwa nemuteereri kubva panzwi rinofamba:

Kuwanda kwemafungu eruzha = musiyano muhuwandu hwemafungu maviri eruzha anopindirana
Kakawanda kemakiti ndeinotevera:
744 hz – 742 hz = 2 hertz
Mhinduro chaiyo ndiA.

10. Mota mbiri A neB dziri kufamba dzichienda kune imwe neimwe nekumhanya kwe20 ms ^-1 uye 40 ms ^-1 zvakateerana . Mota B inobva yaridza hwamanda nefrequency ye580 Hz, kumhanya kweruzha mumhepo i330 ms ^-1 , ipapo frequency inonzwikwa nemutyairi wemota A isati yadarikana ndiyo….

1. 670 Hz
2. 700 Hz
3. 720 Hz
4. 760 Hz
5. 800 Hz

Kukurukurirana

Mitemo yekuisa chiratidzo:
v inogara iri yakanaka
v_p zvakanaka kana muteereri akasvika panobva ruzha
v_p zvakaipa kana muteereri akasiya ruzha rwacho
v_s zvakanaka kana ruzha rwacho rwakatarisa kure nemuteereri
v_s zvakaipa kana ruzha rwuri kusvika kumuteereri
v_p = 0 kana muteereri akanyarara
v_s = 0 kana ruzha rwuripo

Zvinozivikanwa kuti:
Mafambiro eruzha (f) = 580 Hz
Kumhanya kwemuteereri (v)_p) = 20 ms^-1
Kumhanya kwekwakabva ruzha (v)_s) = -40 ms^-1
Kumhanya kweruzha (v) = 330 ms^-1
Akabvunzwa: Kuwanda kweruzha runonzwikwa nemuteereri (f')
Mhinduro:

Fomura yemhedzisiro yeDoppler:
Mhinduro chaiyo ndeiyi B.

11. Mota A nemota B zviri kufamba kubva kune mumwe nemumwe, mota A iri kufamba nekumhanya kwe36 km/h ^-1 uku ichiridza horn refu ine frequency ye700 Hz, kumhanya kweruzha mumhepo i340 ms ^-1 . Kana frequency yehorn ikanzwikwa nemutyairi wemota B = 600 Hz, saka kumhanya kwemota B ndiko….

1. 30 ms^-1
2. 35 ms^-1
3. 40 ms^-1
4. 50 ms^-1
5. 65 ms^-1

Kukurukurirana
Zvinozivikanwa kuti:
Mafambiro eruzha (f) = 700 Hz
Kuwanda kweruzha rwunonzwiwa nemuteereri (f') = 600 Hz
Kumhanya kwekwakabva ruzha (v)_s) = 36 km/awa = 36.000 metres / 3600 seconds = 10 m/s
Kumhanya kweruzha (v) = 340 ms^-1
Akabvunzwa: Kumhanya kwemuteereri (v)_p)
Mhinduro:
v_p zvakaipa nekuti muteereri anosiya ruzha rwacho.
v_s zvakanaka nekuti inzwi riri kubva kune muteereri.
Mhinduro chaiyo ndiC.

12. Amburenzi A iri kufamba nekumhanya kwe 0,25 v kumashure kwe sedan B iyo iri kufamba nekumhanya kwe 0,2 v munzira imwecheteyo neA. Panguva iyoyo, amburenzi A inoridza siren yayo pa 1.000 Hz. Kana kumhanya kweruzha kuri v, frequency inonzwikwa nemutyairi we sedan B ndeye…

A. 1.500 Hz
B. 1.250 Hz
C. 1.111 Hz
D. 1.067 Hz
E. 1.000 Hz

Kukurukurirana
Zvinozivikanwa :
Mafambiro eruzha (f) = 1.000 Hz
Kumhanya kwekwakabva ruzha (v)_s) = -0,25 v (zvichienderana nechinhu chinoburitsa ruzha)
Kumhanya kweruzha (v) = v
Kumhanya kwemuteereri (v)_p) = -0,2 v (zvichienderana nechinhu chinoburitsa ruzha)
Akabvunzwa : Kuwanda kweruzha runonzwiwa nemuteereri (f')
Jawab :

Fomura yemhedzisiro yeDoppler:
Mitemo yekuisa chiratidzo:
v inogara iri yakanaka
v_p zvakanaka kana muteereri akasvika panobva ruzha
v_p zvakaipa kana muteereri akasiya ruzha rwacho
v_s zvakanaka kana ruzha rwacho rwakatarisa kure nemuteereri
v_s zvakaipa kana ruzha rwuri kusvika kumuteereri
v_p = 0 kana muteereri akanyarara
v_s = 0 kana ruzha rwuripo

Mhinduro chaiyo ndiD.

13. Ruzha rune frequency ye640 Hz runofamba ruchienda kune mucherechedzi nekumhanya kwe20 m/s. Kana kumhanya kweruzha mumhepo kuri 340 m/s uye mucherechedzi achifamba kubva kune ruzha nekumhanya kwe10 m/s, saka frequency yeruzha rwunonzwiwa nemucherechedzi ndeye…

A. 600 Hz
B. 660 Hz
C. 900 Hz
D. 980 Hz
E. 1300 Hz

Kukurukurirana
Zvinozivikanwa :
Mafambiro eruzha (f) = 640 Hz
Kumhanya kwekwakabva ruzha (v)_s) = -20 m/s (zvichienderana nemhepo senzira inofambisa ruzha)
Kumhanya kweruzha (v) = 340 m/s (zvichienderana nemhepo senzira yekutumira ruzha)
Kumhanya kwemuteereri (v)_p) = -10 m/s (zvichienderana nemhepo senzira inofambisa ruzha)
Akabvunzwa : Kuwanda kweruzha runonzwiwa nemuteereri (f')
Jawab :
Mhinduro chaiyo ndeiyi B.

14. Soko reruzha rinofamba nekumhanya kwe60 m/s richisiya mucherechedzi ari kumashure kwaro achifamba nenzira imwecheteyo nesoko reruzha pakumhanya kwe10 m/s. Kana kumhanya kweruzha mumhepo kuri 340 m/s uye frequency yesoko reruzha iri 800 Hz, saka frequency yeruzha rwunonzwiwa nemucherechedzi ndeye…
A. 700 Hz
B. 800 Hz
C. 940 Hz
D. 960 Hz
E. 1.120 Hz
Kukurukurirana
Zvinozivikanwa :
Mafambiro eruzha (f) = 800 Hz
Kumhanya kwekwakabva ruzha (v)_s) = 60 m/s (zvichienderana nemhepo senzira inofambisa ruzha)
Kumhanya kweruzha (v) = 340 m/s (zvichienderana nemhepo senzira yekutumira ruzha)
Kumhanya kwemuteereri (v)_p) = 10 m/s (zvichienderana nemhepo senzira inofambisa ruzha)
Akabvunzwa : Kuwanda kweruzha runonzwiwa nemuteereri (f')
Jawab :

Mhinduro chaiyo ndiA.

Kwakabva mubvunzo:

Mibvunzo yeNational Examination Physics yeChikoro Chesekondari/Chikoro Chepamusoro Chebasa