Tambayoyi Misali na Kayan Aiki na Tantancewa

Misalai 12 na Tambayoyin Kayan Aiki na Ganuwa

Madubi Mai Lanƙwasa

1. Hoton da madubi mai kauri ya samar na wani abu mai tsayi h wanda aka sanya a nesa da ya fi ƙasa da f (f = tsawon madubin) shine...

A. kama-da-wane, a tsaye, an rage

B. kama-da-wane, a tsaye, an ƙawata shi

C. na gaske, a tsaye, an rage

D. na gaske, an juya shi, an ƙara girmansa

E. ainihin, an juya, an rage

Tattaunawa

Ga misali na samuwar inuwa kamar tambayar da ke sama. Dangane da wannan hoton, inuwar tana kama da ta kama-da-wane, a tsaye, kuma an ƙawata ta. Amsar da ta dace ita ce B.

2. Idan an sanya wani abu a tsakiya tsakanin wurin da aka fi mayar da hankali da kuma saman madubi mai lanƙwasa, hoton zai yi kama da haka:

(1) an ninka sau biyu

(2) a tsaye

(3) yana da nisan hoto = nisan mayar da hankali

(4) ta intanet

Bayanin da ya dace shine…

A. 1, 2 da 3

B. 1 da 3

C. 1 da 4

D. 4 kawai

E. duk daidai ne

Tattaunawa

A ce nisan wurin mai da hankali ko tsawon mai da hankali (f) = 20 cm kuma nisan abu (s) = 10 cm, kamar yadda aka nuna a hoton da ke ƙasa.

a) Nisa tsakanin inuwa

1/f = 1/s + 1/s'

1/20 = 1/10 + 1/2'

1/20 – 1/10 = 1/2'

1/20 – 2/20 = 1/2'

-1/20 = 1/2'

s' = -20 cm

Nisa ta inuwa mara kyau yana nufin inuwa ta kama-da-wane ce. Inuwar ta kama-da-wane ce saboda babu haske da ke ratsa ta. Wannan yana nuna ta hanyar layi mai dige-dige a cikin hoton.

b) Girman hoton

M = -s'/s = -(-20)/10 = 20/10 = sau 2

Girman hoton da kyau yana nufin hoton a tsaye yake. An ƙara girman hoton sau biyu.

Abubuwan da ke cikin inuwa bisa ga hoton da sakamakon lissafi da ke sama sune:

1. An ƙara girmansa sau 2

2. Tsaye

3. Nisan hoto = tsawon mai da hankali = 20 cm

4. A yanayi na kama-da-wane

Amsar da ta dace ita ce E.

Madubin Convex

3. Ana sanya madubi mai lanƙwasa a kan lanƙwasa a kan hanya. Idan wani abu ya kai mita 2 daga madubin, tsayin hoton da aka samar shine 1/16 na tsayin abin. Tsawon madubin shine…

A. 2/15 m

B. 2/17 m

C. 5/8 m

D. 15/2 m

E. 17/2 m

Tattaunawa

An san cewa:

Nisa (s) na abu = mita 2

Ƙara girman hoto (M) = sau 1/16

Tambaya: Tsawon madubi mai lanƙwasa

Amsa:

Da farko ƙididdige nisan inuwa (s'):

Nisa tsakanin hoton da hoton shine - mita 1/8. Alamar mara kyau tana nufin hoton yana kama da na kama-da-wane.

Tsawon madubin da ke da lanƙwasa (f):

Alamar mara kyau tana nufin cewa madogarar madubin da ke kewaye da madubi tana kama da ta kama-da-wane.

Amsar da ta dace ita ce A.

4. Hoton da madubi mai lanƙwasa da kuma wani abu mai tsayi h da aka sanya a gaban madubi shine...

A. na gaske, a miƙe, an faɗaɗa

B. kama-da-wane, a tsaye, an ƙawata shi

C. na gaske, a tsaye, an rage

D. na gaske, an juya shi, an ƙara girmansa

E. kama-da-wane, a tsaye, an rage

Tattaunawa

Dangane da hoton da ke gefe, halayen inuwar suna kama-da-wane, a tsaye, kuma an rage su.

Amsar da ta dace ita ce E.

Ruwan tabarau mai lanƙwasa

5. Daga jadawalin ruwan tabarau mai lanƙwasa da ke sama, girman hoton a 1/s = 3 shine...

A. Sau 1,5

B. Sau 2

C. Sau 3

D. sau 4

E. sau 6

Tattaunawa

An san cewa:

1/s = 3 cm ^-1 , s = 1/3 cm

1/s' = 1 cm ^-1 , s' = 1/1 cm = 1 cm

Tambaya: Girman hoton (M)

Amsa:

Ƙara girman hoto:

M = s': s

M = 1 cm: 1/3 cm

M = 1 cm x 3/1 cm

M = sau 3

Amsar da ta dace ita ce C.

Ruwan tabarau mai siffar Concave

6. Haske mai layi ɗaya yana faɗowa akan ruwan tabarau mai lanƙwasa. A cikin ruwan tabarau, hasken yana fuskantar…

A. refraction domin haskoki su bazu

B. tunani domin hasken ya bazu

C. refraction domin haskoki su taru

D. tunani domin hasken ya taru

E. refraction amma haskoki suna nan a layi ɗaya

Tattaunawa

Madubi na iya nuna haske yayin da ruwan tabarau na iya nuna haske.

Gilashin ruwan tabarau masu siffar concave suna da ikon yaɗa haske, don haka ana kiransu da ruwan tabarau masu bambancin ra'ayi.

Amsar da ta dace ita ce A.

ganima

7. Ana amfani da ruwan tabarau mai tsawon santimita 5 a matsayin gilashin ƙara girma. Idan ido na yau da kullun yana amfani da gilashin ƙara girma tare da matsakaicin dacewa, to girman gilashin ƙara girma shine...

A. Sau 3

B. Sau 4

C. Sau 5

D. sau 6

E. sau 8

Tattaunawa

An san cewa:

Tsawon ruwan tabarau (f) = 5 cm

Kusa da wurin ido na yau da kullun (N) = 25 cm

An tambaya: Girman gilashin ƙara girman kusurwa

Amsa:

Idan idon ya fi dacewa da wurin, nisan hoton da gilashin ƙara girma ya samar iri ɗaya ne da wurin kusa da idon da aka saba gani. Tsarin da ake amfani da shi don kusurwar ƙara girma na gilashin ƙara girma lokacin da idon ya fi dacewa da wurin:

Amsar da ta dace ita ce D.

Lalacewar Ido

8. Mutumin da ke da hypermetropia dole ne ya sanya tabarau masu ƙarfin ruwan tabarau na +2 diopters don ganin yadda ya kamata. Saboda haka, nisan da mutum zai iya gani ba tare da tabarau ba shine...

A. 2,5 cm

B. 15 cm

C. 50 cm

D. 60 cm

E. 100 cm

Tattaunawa

An san cewa:

Ƙarfin ruwan tabarau (P) = +2 diopters

Tambaya: Menene nisan da mutum zai iya gani ba tare da tabarau ba?

Amsa:

Gilashin madubi mai siffar ko kuma mai siffar ko kuma mai siffar ko?

Ƙarfin ruwan tabarau yana da kyau, don haka ruwan tabarau da ake amfani da shi shine ruwan tabarau mai kyau, wanda aka fi sani da ruwan tabarau mai convex, wanda aka fi sani da ruwan tabarau mai haɗuwa.

Menene tsawon hankali na ruwan tabarau?

P = 1/f

2 = 1/f

f = 1/2 = mita 0,5 = 50 cm

Tsawon ruwan tabarau mai lanƙwasa shine santimita 50.

Ganin nesa ko hangen nesa?

Idan ruwan tabarau da aka yi amfani da shi ruwan tabarau ne mai lanƙwasa, to yana da hangen nesa na kusa.

Menene nisan da ido zai iya gani ba tare da tabarau ba?

Kusa da idon da aka saba gani shine santimita 25. Domin ido ya ga abu a nisan santimita 25 a matsayin idon da aka saba gani, ruwan tabarau dole ne ya samar da hoto a nisan santimita x a gaban ruwan tabarau. Hoton yana gaban ruwan tabarau mai lanƙwasa don hoton ya kasance a tsaye kuma mai kama-da-wane. Hoton yana kama-da-wane, saboda haka nisan hoton (s') mara kyau ne.

-1/s' = 1/f – 1/s

-1/s' = 1/50 – 1/25 = 1/50-2/50 = -1/50

-s' = -50/1 = -50 cm = -0,50 mita

s' = 50 cm = mita 0,5

Nisa mafi kusa da idon da ba a gani sosai zai iya gani shine santimita 50. Nisa mafi kusa da idon da ba a gani sosai shine santimita 25.

Amsar da ta dace ita ce C.

Gilashi

9. Mai fama da presbyopic yana da nisan kusan santimita 50. Idan yana son yin karatu a nisan karatu na yau da kullun, yana buƙatar tabarau masu ƙarfin...

A. -2 diopters

B. -1/2 diopter

C. + 1/2 diopter

D. +2 diopters

E. +4 diopters

Tattaunawa

Tsawon idon da ke kusa da ido na yau da kullun shine santimita 25, kuma faɗin wurin da majiyyaci yake kusa shine santimita 50. Wannan yana nufin mutumin yana da wahalar gani kusa, wani yanayi da aka sani da hangen nesa mai nisa. Ana iya gyara hangen nesa ta amfani da ruwan tabarau mai lanƙwasa, kamar yadda aka nuna a hoton da ke ƙasa.

Domin a lura da wani abu a nisan santimita 25 a gaban ido, dole ne ruwan tabarau ya samar da hoto a nisan santimita 50 a gaban ido da ruwan tabarau. Dole ne hoton ya kasance a gaban ido don a gani, don haka hoton ya kasance a tsaye kuma mai kama da na'urar kwamfuta.

An sani cewa :

Nisa (s) na abu = 25 cm

Nisa tsakanin hotuna (s') = -50 cm (mara kyau domin na'urar kama-da-wane ce)

Tambaya : Tsawon ma'auni (f) na gilashin da ƙarfin ruwan tabarau (P)

Amsa :

1/f = 1/s + 1/s'

1/f = 1/25 + 1/-50

1/f = 2/50 – 1/50

1/f = 1/50

f = 50/1 = 50 cm = mita 0,5

Tsawon hankali mai kyau yana nufin cewa ruwan tabarau da aka yi amfani da shi ruwan tabarau ne mai lanƙwasa.

P = 1/f = 1/0,5 = +2 Diopters

Ƙarfin ko ƙarfin ruwan tabarau shine +2 D. Alamar tabbatacce tana nufin cewa ruwan tabarau da aka yi amfani da shi ruwan tabarau ne mai lanƙwasa.

Amsar da ta dace ita ce D.

madubin hangen nesa

10. Na'urar hangen nesa (microscope) tana da ruwan tabarau mai kama da na'urar hangen nesa (objective lense) da kuma ruwan tabarau mai tsawon 0,9 cm da 5 cm, bi da bi. Mutum yana sanya samfurin 10 mm a gaban ruwan tabarau mai kama da na'urar hangen nesa don a lura da shi ta cikin ruwan tabarau mai kama da na'urar hangen nesa ba tare da wani matsala ba. Idan abin samfurin yana da tsawon 0,5 mm kuma nisan karatun mutum na yau da kullun shine 25 cm, to tsawon abin da ke bayyane zai kasance...

A. 7,5 mm

B. 10 mm

C. 12,5 mm

D. 15 mm

E. 20 mm

Tattaunawa

An san cewa:

Tsawon ruwan tabarau mai ma'ana (f _ob ) = 0,9 cm = 9 mm

Nisa mai zurfi na ruwan tabarau na ido (f _ok ) = 5 cm = 50 mm

Nisa daga abu daga ruwan tabarau na zahiri (s _ob ) = 10 mm

Tsawon abu (h) = 0,5 mm

Kusa da wurin ido na yau da kullun (N) = 25 cm = 250 mm

Tambaya: Tsawon inuwar (h')

Amsa:

Lura ba tare da kulawa ba iri ɗaya ne da lura tare da ƙarancin kulawa, inda ido ke hutawa lokacin kallon hoto wanda yake nesa da iyaka.

Da farko, ƙididdige nisan hoton daga ruwan tabarau na zahiri. Ruwan tabarau na zahiri ruwan tabarau ne mai siffar convex, don haka ana amfani da dabarar ruwan tabarau mai siffar convex:

1/s _ob '= 1/f _ob - 1/s _ob = 1/9 - 1/10 = 10/90 - 9/90 = 1/90

s _ob ' = 90/1 = 90 mm

Ana ƙididdige jimlar girman na'urar hangen nesa idan idon ya kai matsakaicin wurin zama ko kuma lokacin da hoton yake a ƙarshen lokaci ta amfani da dabarar:

Tsawon inuwar = tsawon abu x jimlar girmansa = (0,5 mm)(45) = milimita 22,5.

11. Na'urar hangen nesa ta microscope tana da tsawon ma'aunin hangen nesa na 2,0 cm. Ana sanya abu a ƙarƙashin ma'aunin a nesa na 2,2 cm. Na'urar hangen nesa ta microscope tana da tsawon cm 24,5 kuma mai lura yana kallo ba tare da samun isasshen sarari ba. Idan mai lura yana da idanu na yau da kullun, girman ma'aunin hangen nesa gaba ɗaya shine…

A. Sau 20

B. Sau 25

C. Sau 50

D. sau 75

E. sau 100

Tattaunawa

An san cewa:

Tsawon maƙasudin ruwan tabarau mai ma'ana (f _ob ) = 2,0 cm

Nisa tsakanin abu da ke gaban ruwan tabarau na zahiri (s _ob ) = 2,2 cm

Tsawon na'urar hangen nesa (l) = 24,5 cm

Kusa da wurin ido na yau da kullun (N) = 25 cm

Lura ba tare da masauki ba

Tambaya: Jimlar girman na'urar hangen nesa (M)

Amsa:

Idon yana ɗaukar ɗan lokaci kaɗan idan hoton yana da nisa sosai, kamar yadda aka nuna a hoton da ke gefe.

Tsarin da ake amfani da shi don ƙara girman na'urar hangen nesa (microscope) gaba ɗaya idan idon ya kai matsakaicin girmansa:

Bayani:

M = jimlar girma

l = tsawon na'urar hangen nesa = tazara tsakanin ruwan tabarau na gani da ruwan tabarau na gani = tsawon mai da hankali na ruwan tabarau na gani + nisan hoto daga ruwan tabarau na gani (s _ob ') = f _ok + s _ob '

Nisa daga hoton daga ruwan tabarau na zahiri (s _ob '):

1/f _ob = 1/s _ob + 1/s _ob '

1/s _ob '= 1/f _ob - 1/s _ob = 1/2 - 1/2,2 = 2,2/4,4 - 2/4,4 = 0,2/4,4

s _ob ' = 22

Nisa daga ruwan tabarau na zahiri shine 22 cm.

Tsawon ma'aunin ruwan tabarau na ido (f _ok ):

l = f _lafiya + s _ob '

f _ok = l - s _ob ' = 24,5 - 22 = 2,5 cm

Jimlar girman na'urar hangen nesa (M):

Amsar da ta dace ita ce E.

12. Wani ɗalibi (Sn = 25 cm) ya gudanar da gwaji ta amfani da na'urar hangen nesa, tare da bayanai kamar yadda yake a cikin zane mai zuwa. Girman na'urar hangen nesa shine…

A. Sau 30

B. Sau 36

C. Sau 40

D. sau 46

E. sau 50

Tattaunawa

An san cewa:

Kusa da wurin ido na yau da kullun (N) = 25 cm

Nisa tsakanin abu (s _ob ) = 1,2 cm

Tsawon abin da aka fi mayar da hankali a kai (f _ob ) = 1 cm

Tsawon ma'aunin ruwan tabarau na ido (f _ok ) = 5 cm

Nisa tsakanin gilashin ido da na gani = 10 cm

An tambaya: Girman Microscope

Amsa:

Idan hoton ƙarshe yana da nisa sosai, ido zai ɗauki ɗan lokaci kaɗan, akasin haka, idan hoton yana da nisa sosai, ido zai ɗauki mafi girman matsayi. Hoton ƙarshe a cikin hoton da ke sama yana nuna hoto mai nisa sosai don ido ya dace da mafi girman matsayi.

Tsarin da ake amfani da shi wajen ƙara girman ido a lokacin da idon yake a matsakaicin matsayi:

Tattaunawa game da na'urorin microscopes

Rigunan hangen nesa

Tattaunawa game da madubin hangen nesa

13. Kalli hoton hanyar hasken da ke samar da hoton a na'urar hangen nesa mai zuwa:
Nisa tsakanin ruwan tabarau na zahiri da ruwan tabarau na ido dAsalin na'urar hangen nesa (microscope) shine….

A. 20 cm
B. 24 cm
C. 25 cm
D. 27 cm
E. 29 cm

Tattaunawa

An san cewa:
Nisa tsakanin abu da ruwan tabarau na zahiri (s)_ob= 2 cm
Tsawon mai da hankali na ruwan tabarau na zahiri (f)_ob= 1,8 cm
Nisa daga ainihin hoton daga ruwan tabarau na ido (s)_ok= 6 cm
Tsawon ma'aunin ruwan tabarau na ido (f_ok= 6 cm
Tambaya: Nisa tsakanin ruwan tabarau na gani da ruwan tabarau na ido (tsawon bututun microscope)
Amsa:

Ka lura da hoton da ke sama. Idan ido ya kai matsakaicin daidaito, hoton ƙarshe da ruwan tabarau na ido ya samar yana da nisan da ba shi da iyaka. Domin hoton ƙarshe da ruwan tabarau na ido ya samar ya kasance a nesa mara iyaka, ainihin hoton da ruwan tabarau na ido ya samar dole ne ya kasance a wurin da ruwan tabarau na ido ya ke. Don haka, nisan da ke tsakanin ruwan tabarau na ido da ruwan tabarau na ido (l) = nisan ainihin hoton daga ruwan tabarau na ido (s _ob ') + tsawon mai da hankali na ruwan tabarau na ido (f _ok ).

Nisa daga ainihin hoton daga ruwan tabarau na zahiri (s)_ob') :
1 / s_ob + 1/s_ob' = 1/f_ob
1 / s_ob' = 1/f_ob – 1/s_ob
1 / s_ob' = 1/1,8 – 1/2
1 / s_ob' = 10/18 – 9/18 = 1/18
s_ob' = 18 cm

Nisa tsakanin ruwan tabarau na gani da ruwan tabarau na ido (tsawon bututun na'urar hangen nesa):
l = s_ob'+ f_ok
l = 18 cm + 6 cm
l = 24 cm
Amsar da ta dace ita ce B.

Tushen tambaya:

Tambayoyin Nazarin Fizik na Ƙasa ga Makarantar Sakandare ta Babbar Sakandare/Makarantar Sakandare ta Sana'a

Misalan tambayoyi game da kayan aikin ido na gani
Mutumin da ke da idanu na yau da kullun da farko yana ganin abu a nisan mita 500. Bayan 'yan mintuna kaɗan mutumin ya ga wani abu a nisan mita 1. Nisa tsakanin cornea da retina mata an yi la'akari da shi iri ɗaya da nisan inuwa, wanda yake kimanin cm 2,5. Lissafa:
(a) Tsawon ma'auni da ƙarfin abin idon lokacin da aka mayar da hankali kan abu mai nisan mita 500
(b) Tsawon da ƙarfin abin da aka sanya ido a kai lokacin da aka mayar da hankali kan abu mai nisan mita 1
(c) Canji a tsawon idon ido lokacin da aka mayar da hankali daga mita 500 zuwa mita 1.
Tattaunawa
An san cewa:
Nisa tsakanin abu 1 (s)₁) = mita 500 = santimita 50.000
Nisa tsakanin abu 2 (s)₂) = mita 1 = santimita 100
Nisa tsakanin inuwar (s') = 2,5 cm
Amsa:
(a) Tsawon hankali da ƙarfin ruwan tabarau na ido lokacin da idon ya mayar da hankali kan abu mai nisan mita 500
Ana ƙididdige tsawon mai da hankali (f) na kayan ido ta amfani da dabarar ruwan tabarau mai lanƙwasa :
1/f₁ = 1/s₁ + 1/s' = 1/50.000 + 1/2,5 = 1/50.000 + 20.000/50.000 = 20.001/50.000
f₁ = 50.000/20.001 = 2,499875 cm
f₁ = 0,02499875 mita
Ƙarfin ruwan tabarau na ido:
P₁ = 1/f₁ = 1/0,02499875 = 40,0 Diopters

(b) Tsawon hankali da ƙarfin ruwan tabarau na ido lokacin da idon ya mayar da hankali kan abu mai nisan mita 1
Tsawon maƙasudi (f) na abin ido:
1/f₂ = 1/s₂ + 1/s' = 1/100 + 1/2,5 = 1/100 + 40/100 = 41/100
f₂ = 100/41 = 2,439024 cm
f₂ = 0,02439024 mita
Ƙarfin ruwan tabarau na ido:
P₂ = 1/f₂ = 1/0,02439024 = 41,0 Diopters

(c) Canjin tsayin daka da ƙarfin ruwan tabarau na ido lokacin da aka mayar da hankali kan ido ya canza daga mita 500 zuwa mita 1.
Canji a tsawon mai da hankali na ruwan tabarau na ido = f₁ - f₂ = 0,02499875 – 0,02439024 = mita 0,00060851
Canjin ƙarfin ruwan tabarau na ido = 41,0 – 40,0 = 1,0 Diopters

Dangane da tattaunawar tambayoyin da ke sama, za a iya kammala da cewa:
– Tsawon ruwan tabarau na ido ya fi girma idan ido ya kalli abubuwa a nesa kuma tsawon ruwan tabarau na ido ya fi ƙanƙanta idan ido ya kalli abubuwa a nesa.
– Ƙarfin ruwan tabarau na ido yana ƙaruwa idan ido yana kallon abu kusa, kuma ƙarfin ruwan tabarau na ido yana raguwa idan ido yana kallon abu mai nisa. Don haka kusancin abin, ƙarfin ruwan tabarau na ido yana ƙaruwa.

Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyi kan kayan aikin ido na gani.

Misalin tambayoyin gilashi
Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyi akan gilashin gani.

Misalan tambayoyin ruwan tabarau na hulɗa
Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyi kan kayan aikin gani na tabarau na ido.

Misali na tambayar gilashin ƙara girma ko gilashin ƙara girma
Rubutun yana da ƙanƙanta sosai har ba za a iya karantawa ba. Mutum yana karanta rubutun ta amfani da gilashin ƙara girma idan idon yana da ƙarancin dacewa, kusurwar ƙara girma ta gilashin ƙara girma sau 5. Nawa ne tsawon gilashin ƙara girma?
Tattaunawa
An san cewa:
Kusa da wurin ido na yau da kullun (N) = 25 cm
Girman kusurwar gilashin ƙara girma (M) = 5 x
An tambaya: Tsawon ma'aunin gilashin ƙara girman (f)
Amsa:
Tsarin da ake amfani da shi don ƙara girman kusurwar gilashin ƙara girma lokacin da idon yake a matsakaicin matsayi:
M = (N/f) + 1
5 = (25 cm / f) + 1
5 – 1 = 25 cm / f
4 = 25 cm / f
f = 25 cm / 4
f = 6,25 cm
Tsawon gilashin ƙara girman kai shine 6,25 cm. Tsawon gilashin ƙara girman kai yana da kyau saboda gilashin ƙara girman yana amfani da ruwan tabarau mai lanƙwasa kamar ruwan tabarau mai kyau.

Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyi game da gilashin ƙara girma ko gilashin ƙara girma.

Misalan tambayoyi game da na'urar microscope
Mutumin da ke da idanu na yau da kullun yana kallon wani abu ta amfani da na'urar hangen nesa ta microscope. Tsawon hasken ruwan tabarau na ido shine 20 mm kuma tsawon hasken ido shine 30 mm. Idan ainihin hoton da ruwan tabarau na ido ya samar yana da nisan santimita 10, ƙididdige girman kusurwar na'urar hangen nesa idan aka duba shi da idon a mafi ƙarancin wurin da ya dace.
Tattaunawa
An san cewa:
Tsawon mai da hankali na ruwan tabarau na zahiri (f)_ob) = 20 mm
Tsawon ma'aunin ruwan tabarau na ido (f_ok) = 30 mm
Nisa tsakanin hoton ruwan tabarau na zahiri (s)_ob') = 10 cm = 100 mm
Nisa kusa da ido na yau da kullun (N) = 25 cm = 250 mm
An tambaya: Girman kusurwa na na'urar microscope idan aka duba shi da ido a mafi ƙarancin wurin zama
Amsa:
Tsarin ƙara girman kusurwa na na'urar hangen nesa lokacin da ido ya dace da aƙalla:

Jimlar girman kusurwa (M) na na'urar hangen nesa idan idon yana da ƙarancin wurin zama shine kusan 42,0 x.

Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyin na'urar hangen nesa ta haske.

Misali na tambayar tauraron tauraron dan adam
Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyi akan na'urorin hangen nesa na taurari.

Misalan tambayoyi game da kayan aikin gani na kyamara
Za a iya yin cikakken bayani game da tambayoyin a cikin labarin game da misalan tambayoyi kan kayan aikin gani na kyamara.