1. Chinhu chakareba 2 mm chinoiswa 10 cm kubva pagirazi rinokudza . Pedyo nenzvimbo N = 25 cm. Sarudza kukura kwekona uye kukwirira kwemufananidzo.
Zvinozivikanwa:
Kureba kwechinhu (h o ) = 2 mm
Nzvimbo iri pedyo (N) = 25 cm
Kureba kwechinhu (do o ) = 10 cm
Zvinodiwa: Kukura kwekona (M) uye kukwirira kwemufananidzo (h i )
Solution:
M = N / s
M = 25 cm / 10 cm
M = 2.5
Kureba kwemufananidzo = 2.5 x 2 mm = 5 mm.
2. Lenzi ine urefu hwe 25 cm inoshandiswa segirazi rinokudza. Sarudza (a) kukura kwekona kana ziso rakatarisa panzvimbo yaro iri pedyo N = 25 cm (b) kukura kwekona kana ziso rakasununguka.
Zvinozivikanwa:
Nzvimbo iri pedyo (N) = 25 cm
Kureba kwegirazi rinokudza (f) = 25 cm
Chiratidzo chekuwedzera chinoratidza kuti lenzi iyi igirazi rinobatana.
Solution:
(a) kukura kwekona kana ziso rakatarisa panzvimbo yaro iri pedyo N = 25 cm
M = (N/f) + 1
M = (25 cm / 25 cm) + 1
M = 1 + 1
M = 2 X
Kana kukwirira kwechinhu chiri 1 cm, kukwirira kwemufananidzo kuri 2 x 1 cm = 2 cm.
(b) kukwidziridzwa kwekona kana ziso rakasununguka
M = N / f
M = (25 cm / 25 cm)
M = 1 X
Kana kukwirira kwechinhu chiri 1 cm, kukwirira kwemufananidzo kuri 1 x 1 cm = 1 cm.
3. Chinhu chakareba 1 cm chinoiswa pamberi pe lenzi ine urefu hwe 10 cm. Sarudza (a) kukwirira kwemufananidzo kana ziso rakatarisa panzvimbo yaro iri pedyo N = 25 cm (b) Kureba kwemufananidzo kana ziso rakasununguka.
Zvinozivikanwa:
Kureba kwechinhu (h o ) = 1 cm
Kureba kwefocal (f) = 10 cm
Nzvimbo iri pedyo (N) = 25 cm
Solution:
(a) Kureba kwemufananidzo kana ziso rakatarisa panzvimbo yaro iri pedyo N = 25 cm
M = (N/f) + 1
M = (25 cm / 10 cm) + 1
M = 2.5 + 1
M = 3.5 X
Kana kukwirira kwechinhu chiri 1 cm, kukwirira kwemufananidzo kuri 3.5 x 1 cm = 3.5 cm.
(b) Kureba kwemufananidzo kana ziso rakasununguka.
M = N/f
M = 25 cm / 10 cm
M = 2.5 X
Kana kukwirira kwechinhu chiri 1 cm, kukwirira kwemufananidzo kuri 2.5 x 1 cm = 2.5 cm.
4. Kukura kwekona kana ziso rakasununguka = 5X. Kana iri pedyo nenzvimbo = 25 cm, kureba kwegirazi rinokudza zvinhu ndekupi?
Zvinozivikanwa:
Kureba kwechinhu (h o ) = 2 mm
Kukura kwekona (M) = 5X
Nzvimbo iri pedyo (N) = 25 cm
Zvinodiwa: Hurefu hwefocal
Solution:
Fomura yekuwedzera kwekona kana ziso rakasununguka:
M = N/f
5 = 25 cm / f
f = 25 cm / 5
f = 5 cm
Kureba kwegirazi rinokudza = 5 cm.
5. Chinhu chinoonekwa nemunhu ane girazi rinokudza zvinhu rine urefu hwe15 cm. Kana nzvimbo iri pedyo nemaziso emunhu = 30 cm, saka tarisa kukura kwegirazi rinokudza zvinhu.
Zvinozivikanwa:
Nzvimbo iri pedyo neziso rakajairika (N) = 30 cm
Kureba kwegirazi rinokudza (f) = 15 cm (pamwe nechiratidzo chekuti girazi riri kuungana)
Zvinodiwa: kukura kwakanyanya
Solution:
Kukura kwepamusoro kunoitika kana nzvimbo yeziso iri pamusoro. Kukura kwegirazi rinokudza kwekona kunoitika kana nzvimbo yeziso iri pamusoro:
M = (N/f) + 1
M = (30 cm / 15 cm) + 1
M = 2 + 1
M = katatu
6. Girazi rinokudza rine simba rekuona rema diopters makumi maviri rinoshandiswa nemunhu ane maziso akajairwa e25 cm. Kana nzvimbo yacho iri shoma, sarudza kukura kushoma.
Zvinozivikanwa:
Pedyo nepaziso remazuva ose (N) = 25 cm
Simba regirazi rinokudza (P) = 20 diopters
Zvinodiwa: Kukura kudiki
Solution:
Kureba kwegirazi rinokudza zvinhu:
P = 1/f
20 = 1/f
f = 1/20
f = 0.05 mamita
f = 5 cm
Kukura kwekona kana nzvimbo yekugara iri shoma:
M = N / f
M = (25 cm / 5 cm)
M = kashanu
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