Mienzaniso mitatu yemibvunzo yegirazi yakavharika
1. Mufananidzo wakakodzera pagirazi rakakombama unowanikwa mu...
Kukurukurirana
Mufananidzo chaiwo wegirazi rakakombama uri mumhinduro B. Kuti ujekese kunzwisisa kwako, teerera tsananguro iri pazasi.
Kana daro rechinhu riri diki pane urefu hwegirazi rakakombama, kuumbwa kwemufananidzo kuchaonekwa sezvakaratidzwa mumufananidzo uri pazasi.
Kana chinhu chacho chiri pakati penzvimbo yakatarisana nepakati pegirazi rakakombama, kuumbwa kwemufananidzo kwakafanana nemufananidzo uri pazasi.
Kana daro rechinhu chacho rakakura kupfuura radius yekukombama (R) yegirazi rakakombama, kuumbwa kwemufananidzo kuchaonekwa sezviri mumufananidzo uri pazasi.
Mhinduro chaiyo ndeiyi B.
2. Mufananidzo chaiwo wekuumbwa kwemufananidzo wechinhu chiri pamberi pegirazi rakakombama unoratidzwa mumufananidzo...
Kukurukurirana
Kana daro rechinhu riri diki pane urefu hwegirazi rakakombama, kuumbwa kwemufananidzo kuchaonekwa sezvakaratidzwa mumufananidzo uri pazasi.
Kana chinhu chacho chiri pakati penzvimbo yakatarisana nepakati pegirazi rakakombama, kuumbwa kwemufananidzo kwakafanana nemufananidzo uri pazasi.
Kana daro rechinhu chacho rakakura kupfuura radius yekukombama (R) yegirazi rakakombama, kuumbwa kwemufananidzo kuchaonekwa sezviri mumufananidzo uri pazasi.
Mhinduro A haina kururama nekuti chiedza chinoratidzwa hachigone kupfuura nepakati pechinotenderera chegirazi (M).
Mhinduro B haina kururama nekuti chiedza chinoratidzwa hachisangani pamugumo wechinhu chacho.
Mhinduro C haina kururama nekuti chiedza chinoratidzwa hachisangani pamugumo wechinhu chacho.
Mhinduro chaiyo ndiD.
3. Mufananidzo chaiwo wemwaranzi yakakosha pagirazi rakakombama riri pazasi ndewe...
Kukurukurirana
Chiitiko kana kuti mwaranzi inoonekwa inofanira kupfuura nepakati penzvimbo yakatarisana.
Mhinduro chaiyo ndeiyi B.
5. Tarisa mufananidzo wegirazi rakakombama riri pazasi!
Hunhu hwemufananidzo unoumbwa negirazi ndehwekuti...
A. chaiyo, yakaderedzwa uye yakatwasuka
B. chaiyo, yakakura uye yakatwasuka
C. chaiyo, yakaderedzwa uye yakapindurwa
D. chaiyo, yakakura uye yakapindurwa
Kukurukurirana
Hunhu hwemumvuri ndehwechokwadi, hwakaderedzwa uye hwakapinduka.
Mhinduro chaiyo ndiC.
5. Chinhu chakareba 1 cm chinoiswa 10 cm pamberi pegirazi rakakombama rine urefu hwe15 cm. Sarudza:
A. Kureba kwemumvuri?
B. Mumvuri wacho wakareba sei?
C. Ndezvipi zvinhu zvemumvuri?
Kukurukurirana
Zvinozivikanwa kuti:
Kureba kwechinhu (h) = 1 cm
Kureba kwechinhu = 10 cm
Kureba kwegirazi rakakombama (f) = 15 cm
Mhinduro:
A. Kureba kwemufananidzo (s')
1/f = 1/s + 1/s'
1/s' = 1/f – 1/s = 1/15 – 1/10 = 2/30 – 3/30 = -1/30
s' = -30/1 = -30 cm
Chiratidzo chekusaratidza daro remumvuri chinoreva kuti mumvuri uri paindaneti.
B. Kureba kwemumvuri (h')
Usati waverenga kukwirira kwemumvuri, tanga waverenga kukura kwemumvuri.
Kukura kwemufananidzo (M):
M = -s'/s = h'/h
M = -(-30)/10 = 30/10 = 3
Mufananidzo wacho wakakudzwa katatu.
Kureba kwemumvuri (h'):
M = h' / h
3 = h' / 1 cm
h' = 3 (1 cm)
h' = 3 cm
Kureba kwemumvuri i3 cm. Kureba kwemumvuri kwakanaka zvinoreva kuti mumvuri wakamira.
C. Hunhu hwemimvuri
Zvichibva pamhedzisiro yekuverenga iri pamusoro, zvinogona kugumiswa kuti hunhu hwemumvuri ndehwekuti:
Maya, akamira uye akakudzwa
6. Muchiedza chetochi, girobhu diki remwenje rinoiswa panzvimbo yegirazi rakakombama. Izvi zvinoitirwa kuti chiedza chinoratidzwa chive….
A. kuungana pane imwe nguva
B. yakafanana nenzvimbo iri kure
C. kupararira kwese kwese
D. anoumba mufananidzo chaiwo, wakaderedzwa
Kukurukurirana
Kana girobhu rechiedza riri panzvimbo yegirazi rakakombama, rambi rechiedza rinobva mugirobhu rinorova pamusoro pegirazi rakakombama uye rinozoratidzwa nepamusoro pegirazi rakakombama. Kutungamira kwerambi rechiedza rinoratidzwa kwakafanana nechikamu chikuru chegirazi rakakombama.
Mhinduro chaiyo ndeiyi B.
7. Chinhu chinoiswa pamberi pegirazi sezvakaratidzwa mumufananidzo. Kukura kwemufananidzo wakagadzirwa ndekwekuti…..
A. ka3
B. ka2
C. ka1
D. 1/2 ka
Kukurukurirana
Zvinozivikanwa kuti:
Kureba kwechinhu = 60 cm
Kureba kwefocal (f) = 20 cm
Pamusoro pane mufananidzo wegirazi rakakombama. Nzvimbo inotarisa girazi rakakombama ndipo panopinda chiedza, saka kureba kwegirazi rakakombama kwakanaka.
Mubvunzo: Kukura kwemufananidzo (M)
Mhinduro:
Tanga waverenga daro remufananidzo (s'), wozoverenga kukura kwemufananidzo (M) uchishandisa daro remufananidzo rawawana.
Kureba kwemumvuri:
1/f = 1/s + 1/s'
1/s' = 1/f – 1/s = 1/20 cm – 1/60 cm = 3/60 cm – 1/60 cm = 2/60 cm
s' = 60/2 cm = 30 cm
Kukura kwemufananidzo (M):
M = s'/s = 30 cm / 60 cm = 1/2 kanomwe
Mhinduro chaiyo ndiD.
8. Mufananidzo unotevera unoratidza kuumbwa kwemufananidzo kana chinhu chikaiswa 6 cm pamberi pegirazi rakakombama. Kana chinhu chikabviswa panzvimbo yacho yekutanga 1 cm kubva pagirazi, ipapo daro remufananidzo kubva pagirazi…..
A. 2,5 cm
B. 4,0 cm
C. 7,0 cm
Kureba 9,3 cm
Kukurukurirana
Zvinozivikanwa kuti:
Kureba kwechinhu = 6 cm
Nharaunda yemumvuri (s') = 12 cm
Kureba kwechinhu uye kureba kwemufananidzo zvakanaka nekuti ndezvechokwadi kana kuti zvinopfuudzwa nechiedza.
Mubvunzo: Kana daro rechinhu (s) = 7 cm, saka daro remufananidzo (s) ndiro…..
Mhinduro:
Kutanga, verenga urefu hwegirazi rakakombama uchishandisa daro rechinhu uye daro remufananidzo riri pamusoro apa.
1/f = 1/s + 1/s' = 1/6 + 1/12 = 2/12 + 1/12 = 3/12
f = 12/3 = 4 cm
Kureba kwegirazi rakakombama kwakanaka nekuti nzvimbo yakatarisana negirazi rakakombama inopfuudzwa nechiedza kana kuti ndeyechokwadi.
Kana daro rechinhu chiri 7 cm saka daro remufananidzo nderiri:
1/s' = 1/f – 1/s = 1/4 – 1/7 = 7/28 – 4/28 = 3/28
s' = 28/3 = 9,3 cm
Mhinduro chaiyo ndiD.
