1. Ubude obuqondile belensi eqondiwe bungu-2 cm kanti ubude obuqondile belensi eqondiwe bungu-5 cm. Ibanga eliphakathi belensi eqondiwe kanye nelensi eqondiwe lingu-30 cm. Thola ukukhuliswa okuphelele kanye nebanga lento ukusuka kulensi eqondiwe uma iso likhululekile.
Kwaziwa:
Ubude obuqondile belensi eqondiwe (f ob ) = 2 cm
Ubude obuqondile belensi yeso (f oc ) = 5 cm
Ibanga phakathi kwamalensi (l) = 30 cm
Iphuzu eliseduze (N) = 25 cm
Isixazululo:
(a) ukukhuliswa okuphelele
Ifomula yokukhulisa okuphelele:
M = m ob M oc
M = ukukhulisa okuphelele, m ob = ukukhulisa ilensi eqondiwe, M oc = ukukhulisa i-ocular angular
Ukukhulisa ilensi eqondile lapho iso likhululekile (m ob ):
Ibanga lesithombe ukusuka kulensi eqondiwe (d ob '):
d ob ' = l – f oc = 30 cm – 5 cm = 25 cm
Ibanga lento ukusuka kulensi yenhloso (d ob ):
Ilensi eqondiwe iyilensi ehlanganayo ngakho ubude be-focal bunophawu lwe-plus.
Ibanga lesithombe linophawu lokuhlanganisa ngoba isithombe singokoqobo noma imisebe idlula esithombeni.
Ukwandiswa kwelensi eqondile :
Ukukhulisa i-engela yamehlo lapho iso likhululekile (M ok ):
I- M oc = N / f oc = 25 cm / 5 cm = 5X
Ukwandiswa okuphelele:
M = m ob M oc = (12.5)(5) = 62.5X
(b) Ibanga lento ukusuka kulensi eqondile (d ob )
Ibanga lento ukusuka kulensi eqondiwe lingama-2 cm.
2. I-microscope ine-5X objective kanye ne-20X ocular. Ibanga phakathi kwamalensi lingu-15 cm. (a) Thola ukukhuliswa okuphelele uma iso likhululekile (b) thola ubude be-focal lens ye-ocular (c) ubude be-focal lens ye-objective
Kwaziwa:
Ukwandiswa kwelensi eqondiwe (m ob ) = 5X
Ukwandiswa kwelensi yeso ( Moc ) = 20X
Iphuzu eliseduze (N) = 25 cm
Ibanga phakathi kwamalensi (l) = 15 cm
Isixazululo:
(a) Ukukhulisa okuphelele (M)
M = m ob M oc
M = (5)(20) = 100X
(b) Ubude obuqondile belensi yeso (f oc )
Ifomula yokukhulisa i-angular yelensi yeso (i-M oc ) lapho iso likhululekile:
I- M oc = N / f oc
Ubude obuqondile belensi yeso:
f oc = N / M oc = 25 cm / 20 = 1.25 cm
(c) ubude obuqondile belensi eqondiwe (f ob )
Ifomula yokukhulisa ilensi eqondiwe lapho iso likhululekile:
Ibanga lesithombe sangempela kusuka kulensi eqondiwe (d ob '):
d ob ' = l – f oc = 15 cm – 1.25 cm = 13.75 cm
Ibanga lento ukusuka kulensi yenhloso (d ob ):
Ubude obuqondile belensi eqondiwe (f ob ):
Ubude obuqondile belensi eqondiwe = 2.29 cm
3. Ubude obuqondile belensi eqondiwe bungu-0.9 cm kanti ubude obuqondile belensi eqondiwe bungu-2.5 cm. I-microscope isetshenziswa yiso elivamile ngaphandle kokufakwa futhi ukukhulisa okuphelele kuphindwe izikhathi ezingu-90. Thola ibanga phakathi kwento kanye nelensi eqondiwe. N = 25 cm.
Kwaziwa:
Ubude obuqondile belensi eqondiwe (f ob ) = 0.9 cm
Ubude obuqondile belensi yeso (f ok ) = 2,5 cm
Ukukhulisa okuphelele (M) = izikhathi ezingu-90
Iphuzu eliseduze leso elijwayelekile (N) = 25 cm
Indawo yokuhlala kweso incane kakhulu.
Okufunwayo: Ibanga eliphakathi kwento kanye nelensi eqondiwe (s ob )
Isixazululo:
Isibalo sokukhulisa okuphelele kwe-angular lapho indawo yokuhlala incane:
Bala ibanga lento mayelana nelensi eqondiwe (s ob ) usebenzisa i-equation yobudlelwano phakathi kobude obuqondile belensi eqondiwe (f ob ), ibanga phakathi kwento kanye nelensi eqondiwe (s ob ) kanye nebanga phakathi kwesithombe kanye nelensi eqondiwe (s ob '):
4. Ubude obuqondile belensi eqondiwe buyi-1.8 cm kanti ubude obuqondile belensi eqondiwe buyi-6 cm. I-microscope isetshenziswa yiso elivamile ngaphandle kokufakwa, ibanga eliphakathi kwelensi eqondiwe kanye nelensi eqondiwe liyi-24 cm. Nquma ibanga lento kusukela kulensi eqondiwe.
Kwaziwa:
Ubude obuqondile belensi eqondiwe (f ob ) = 1.8 cm
Ubude obuqondile belensi yeso (f ok ) = 6 cm
Ibanga eliphakathi kwelensi eqondile kanye nelensi yeso = ubude be-microscope (l) = 24 cm
Indawo yokuhlala incane kakhulu.
Okufunwayo: Ibanga phakathi kwento kanye nelensi yokuqondisa (s ob )
Isixazululo:
Uma indawo yokuhlala incane, ibanga phakathi kwesithombe sokugcina kanye nelensi yeso lihlala lingapheli, njengoba kuboniswe esithombeni esingezansi.
Ibanga eliphakathi kwelensi eqondiwe kanye nelensi yeso (l) = ubude obuqondile belensi yeso (f ok ) + ibanga eliphakathi kwesithombe kanye nelensi eqondiwe (s ob ').
s ob ' = l – f kulungile = 24 cm – 6 cm = 18 cm
Bala ibanga phakathi kwento kanye nelensi eqondiwe (s ob ) usebenzisa i-equation yobudlelwano phakathi kobude obuqondile belensi eqondiwe (f ob ), ibanga phakathi kwento kanye nelensi eqondiwe (s ob ) kanye nebanga phakathi kwesithombe kanye nelensi eqondiwe (s ob '):
Ibanga phakathi kwento kanye nelensi eqondiwe lingama-2 cm.
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