Mienzaniso gumi nemitatu yeMatambudziko eMafungu
1. Tarisa mufananidzo unotevera!
Kana nguva inotorwa nemafungu sezviri pamufananidzo iri 0,3 seconds, zvinoreva kuti nguva yemafungu...
A. 0,2 s
B. 0,9 s
C. 2,0 s
D. 5,0 s
Kukurukurirana
Zvinozivikanwa kuti:
Nguva yekufamba (t) = masekondi 0,3
Mubvunzo: Nguva yemafungu (T)
Mhinduro:
Kune zvikomo zvitatu nemipata yemafungu saka nguva yekufamba kwechikomo chimwe chete kana mupata mumwe wemafungu i0,3 / 3 = 0,1 second
Wavelength imwe ine denderedzwa remafungu rimwe chete uye tangi rimwe remafungu rimwe chete. Saka nguva yekufamba kwewavelength imwe chete = nguva yemafungu = 2 x 0,1 seconds = 0,2 seconds.
Mhinduro chaiyo ndiA.
2. Tarisa mufananidzo unotevera wefungu rakachinjika!
Kumhanya kwekupararira kwemafungu anochinjika ari pamusoro apa...
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Kukurukurirana
Zvinozivikanwa kuti:
Wavelength imwe ine gomo remafungu rimwe chete nemupata mumwe chete wemafungu. Zvichibva pamufananidzo uri pamusoro, wavelength imwe ( λ) ine mamita maviri x 4 = mamita masere.
Nguva inodiwa kuti munhu afambe ndeye 1 wavelength = wave period (T) = 0,5 x 4 = 2 seconds
Mubvunzo: Kumhanya kwekupararira kwemafungu emugungwa (v)
Mhinduro:
Kumhanya kwekuparadzira mafungu emuchinjiko:
v = s / t = λ / T = mamita 8 / masekonzi maviri = mamita 4/sekondi
Mhinduro chaiyo ndeiyi B.
3. Girafu rinotevera rinoratidza maitiro etambo panguva iyo wave inochinjika inopfuura nepakati payo. Kana nzvimbo A nenzvimbo B zvakaparadzaniswa nedaro remasendimita makumi matatu, saka kumhanya kwemafungu ndiko…..
A. 20 cm/s
B. 15 cm/s
C. 10 cm/s
D. 7,5 cm/s
Kukurukurirana
Zvinozivikanwa kuti:
Wavelength imwe ine gomo rimwe chete remafungu uye mupata mumwe chete wemafungu. Kubva paA kusvika paB kune mafungu matatu nemana. Kana daro riri pakati paA naB riri 30 cm saka daro re1/4 wavelength i30 cm/3 = 10 cm. Saka wavelength imwe ( λ) = 4 x 10 cm = 40 cm.
Zvichibva pamufananidzo uri pamusoro, nguva (t) yekufamba ne1 wavelength imasekondi mana.
Mubvunzo: Kumhanya kwekupararira kwemafungu (v)
Mhinduro:
Fomura inokurumidza yekudzora kumhanya:
v = s / t = λ / t
Information :
v = kumhanya kwekupararira, s = daro, λ = kureba kwehurefu, t = nguva
Saka kumhanya kwekuparadzira mafungu ndekwekuti:
v = λ / t = 40 cm / 4 masekondi = 10 cm / 1 sekondi = 10 cm/sekondi
Mhinduro chaiyo ndiC.
4. Tarisa girafu yekutsauka kwemafungu zvichienderana nenguva mumufananidzo unotevera! Kana daro AB = 250 cm, saka kumhanya kwekuparadzira mafungu kuri…
A. 100 cm/s
B. 125 cm/s
C. 400 cm/s
D. 500 cm/s
Kukurukurirana
Zvinozivikanwa kuti:
Kureba AB = 5/4 wavelength = 250 cm.
1/4 kureba kwemasendimita = 250 cm / 5 = 50 cm
1 wavelength = 4/4 wavelength = 4 x 50 cm = 200 cm
Nguva inodiwa kuti ufambe 1 wavelength = 2 seconds
Mubvunzo: Kumhanya kwekupararira kwemafungu
Mhinduro:
Fomura yekumhanya kwekuparadzira mafungu:
v = s / t = λ / t
Tsananguro: v = kumhanya kwekuparadzira mafungu, s = daro, λ = kureba kwehurefu, t = nguva yepakati
Kumhanya kwekuparadzira mafungu:
v = 200 cm / 2 masekondi = 100 cm/sekondi
Mhinduro chaiyo ndiA.
5. Tarisa mufananidzo! Hurefu hwemafungu hunoratidzwa ne...
A. AC uye CE
B. AB' naD'E
C. BB' naDD'
D. B'C neCD'
Kukurukurirana
Hurefu hwemafungu ndiBB' naDD”.
Mhinduro chaiyo ndiC.
6. Mafungu anoumbwa nekudzvanywa uye kuwedzera anonzi mafungu...
A. mhiri kwemakungwa
B. maelektromatiki
C. kureba
D. makanika
Kukurukurirana
Zvichibva panzira yekuparadzira, mafungu akakamurwa kuita mhando mbiri: mafungu emakanika uye mafungu emagetsi . Mafungu emakanika anoda nzira yekufambisa kubva panzvimbo imwe kuenda kune imwe, nepo mafungu emagetsi anogona kufamba asina nzira yekufambisa.
Mafungu emakanika ane mhando mbiri: mafungu anochinjika uye mafungu enguva refu . Mafungu anochinjika mafungu umo divi rekuzunguzika kwenzvimbo yacho rakanangana nedivi rekupararira kwemafungu. Mafungu anochinjika ane makomo nematavi. Mienzaniso yemafungu anochinjika mafungu egungwa nemafungu etambo.
Mafungu marefu mafungu umo divi rekuzunguzika kwechinhu chacho rinoenderana nedivi rekupararira kwemafungu. Mafungu marefu anoratidza kudzvanywa nekumanikidzwa. Muenzaniso wedivi rekuzungudzwa iwaya reruzha.
Mhinduro chaiyo ndiC.
7. Kurira kwetambo kunowedzera kana...
A. Kureba kwetambo kunowedzerwa uye nzvimbo yetambo inoderedzwa
B. Kubata uye kureba kwetambo zvinoderedzwa.
C. Kushushikana nenzvimbo yepakati pewaya zvinowedzerwa
D. kureba kwetambo kwaderedzwa uye kushushikana kwetambo kwawedzera
Kukurukurirana
Fomura yekumhanya kwekupararira kwemafungu patambo:
Information :
v = kumhanya kwekupararira kwemafungu patambo, F = simba rekumanikidzwa patambo, μ = kuwanda kwetambo = huremu hwetambo / hurefu hwetambo ( μ = m/L)
Tambo dziri pazviridzwa zvakawanda zvemimhanzi, zvakaita semagitare nemaviolin, dzine magumo ese akabatana. Tambo dzinogona kuburitsa ruzha rwakasiyana nekuda kwemafungu adzinoburitsa.
Fomura inotaura hukama huripo pakati pehurefu hwetambo (L), urefu hwewavelength ( λ ) kana kuti frequency yeruzha (f) runoburitswa netambo ine magumo maviri akabatana ndeiyi:
Zvichibva paequations 1 ne2, zvinogumiswa kuti frequency kana pitch ye string yakakura kana:
1. Kureba kwetambo kunoderedzwa (L inova diki) —-> Equation 1
2. Simba rekumanikidzana kwetambo rinowedzerwa (F inokura) —-> Equation 2
Mhinduro chaiyo ndiD.
8. Tarisa mufananidzo unotevera wemafungu! Marefu ehurefu hwemafungu...
A. 6 cm
B. 8 cm
C. 10 cm
Kureba 15 cm
Kukurukurirana
Kune mawavelength maviri nehafu (makomo matatu nemipata miviri) ane urefu hwemasendimita gumi nemashanu, saka kureba kwewavelength imwe chete i15 cm / 2,5 = 6 cm.
Mhinduro chaiyo ndiA.
9. Mufananidzo uri pazasi unoratidza huwandu hwemafungu anochinjika akaenzana ne….
A. 1,5
B. 2,0
C. 2,5
D. 3,0
Kukurukurirana
Wave inochinjika ine gomo rimwe chete uye mugero mumwe chete wemafungu. Zvichibva pamufananidzo uri pamusoro, kune mafungu maviri nehafu anochinjika.
Mhinduro chaiyo ndiC.
10. Tarisa mufananidzo unotevera! Kureba kwewavelength imwe chete ndiko...
A. a – g
B. a – d
C. c – g
D. c – f
Kukurukurirana
Hurefu hwewavelength imwe hune gomo remafungu uye mupata wemafungu mumwe.
Kureba kwehurefu kumwe chete = ae = bf = cg
Mhinduro chaiyo ndiC.
11. Mafungu rimwe chete…
A. A – B – C – D
B. A – B – C
C. A – C – D
D. A – B – C – D – A
Kukurukurirana
Wave rimwe chete kana kuti wave rimwe chete rine gomo rimwe chete nemupata mumwe. Zvichibva pamufananidzo uri pamusoro, wave rimwe chete ndiro ABC neBCD.
Mhinduro chaiyo ndeiyi B.
12. Tambo yakatetepa yakabatana netambo yakakora yobva yasungirirwa pamadziro akasimba, sezvakaratidzwa mumufananidzo. Kana mugumo mumwe wetambo yakatetepa ukakanganiswa, mafungu anopararira kurudyi. Panguva ino paA…
A. Mamwe mafungu anotapurirwa uye mamwe anoonekwa nechikamu chimwe chete nefungu rinouya.
B. Mafungu ese anotumirwa akananga kuB
C. Mamwe mafungu anotapuriranwa uye mamwe anoratidzwa
D. Mafungu ese anoonekwa
E. Marefu emvura anoratidzwa uye anotumirwa akafanana
Kukurukurirana
Mhinduro chaiyo ndiA.
13. Munhu anoshevedzera zvine simba ari pakati pemawere maviri akareba. Mushure mechinguva chidiki munhu wacho anonzwa maungira maviri, rimwe mushure memasekonzi matatu uye rimwe mushure memasekonzi mana ekushevedzera. Kumhanya kweruzha mumhepo panguva iyoyo i340 m/s.
Daro riri pakati pemawere maviri iri…
A. 170 m
B. 510 m
C. 1.190 m
D. 1.700 m
Kukurukurirana
Zvinozivikanwa kuti:
Kumhanya kweruzha mumhepo (v) = 340 m/s
Nguva 1 (t 1 ) = masekondi mana / 2 = masekondi maviri
Nguva 2 (t 2 ) = masekondi mana / 2 = masekondi maviri
Nguva yose (t) = 1,5 seconds + 2 seconds = 3,5 seconds
Zvinodiwa: Kureba pakati pemawere maviri
Mhinduro:
v = s/t
s = vt = (340 m/s)(3,5 s) = 1.190 metres
Mhinduro chaiyo ndiC.
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