Funda ngezibonelo zezinkinga zokuphazamiseka kanye nokusabalala kokukhanya - i-diffraction grating , bese usebenza ngezinkinga zokuphazamiseka kanye nokusabalala kokukhanya.
1. I-diffraction grating enemigqa engu-4000 njalo nge-1 cm ifakiwe ebangeni elingamamitha angu-1 ukusuka endaweni ekhanyisiwe. Bala ubude bokukhanya uma isithombe esiphezulu se-oda lokuqala singama-30 cm ukusuka endaweni ekhanyisiwe.
Ingxoxo
Kuyaziwa ukuthi:
d = 1 / (imigqa engu-4000 / cm) = 0,00025 cm = 2,5 x 10-4 cm = 2,5 x 10-6 m
l = 1 m
y = 30 cm = 0,3 m
Kubuziwe: ubude be-wavelength (lambda)
Impendulo:
I-engeli incane kakhulu kangangokuthi isono umamkhulu esondela ku-tangent umamkhulu
Incazelo: nm = nanometer, m = imitha
2. Ukukhanya okunobude be-wavelength obungu-540 nm kuphazanyiswa yi-grating enemigqa engu-2400/cm. Nquma i-engeli ye-diffraction ye-second order!
Ingxoxo
Kuyaziwa ukuthi:
Ubude begagasi = 540 nm = 540 x 10-9 m = 5,40 x 10-7 m
d = 1 / (imigqa engu-2400/cm) = 0,0004 cm = 4 x 10-4 cm = 4 x 10-6 m
n = 2 (uhlelo lwesibili)
Okubuziwe: i-engeli yokwehlukanisa ye-oda lesibili (n = 2)
Impendulo:
3. Umsebe wokukhanya onobude be-wavelength obungu-9450 Å uqondiswe ngokuvundlile ku-diffraction grating. Ukuphazamiseka okukhulu kwenzeka nge-engeli engu-30°. Inani lokuklwebheka ku-grating nge-cm ngayinye lingu…
A. Izikhala ezingu-5291
B. Izikhala ezingu-5200
Igebe le-C. 5560
D. Izikhala ezingu-5650
Igebe elingu-E. 5670
Ingxoxo:
I-Diketahui :
Kubuziwe :
Kunemihuzuko eminingi kugridi njalo nge-1 cm.
Jawab :
Imihuzuko noma izikhala eziningi nge-1 cm:
1/18900 x10-8 cm = 5291 imivimbo / cm
Impendulo efanele ngu-A.
4. I-grating enemigqa engu-2000 nge-cm isetshenziselwa ukunquma ubude bokukhanya. I-engeli ephakathi komugqa ophakathi nomugqa wokuqala we-oda ingu-12o (isono 12o = 0,208). Iyini ubude be-wavelength bokukhanya?
A. 10400 Å
B. 10000 Å
C. 9640 Å
D. 9550 Å
E. 8750 Å
Ingxoxo:
I-Diketahui :
Kubuziwe :
Ubude begagasi?
Jawab :
Impendulo efanele ngu-A.
Ukuphazamiseka kanye nokuphambuka kwemibuzo ekhanyayo - i-diffraction grating
1. I-diffraction grating enemigqa engu-3000 ku-1 cm ifakiwe ebangeni elingamamitha amabili ukusuka endaweni ekhanyisiwe. Bala ubude bokukhanya uma isithombe esiphezulu se-oda lokuqala singama-20 cm ukusuka endaweni ekhanyisiwe.
2. Ukukhanya okunobude be-wavelength obungu-540 nm kuphazanyiswa yi-grating enemigqa engu-2500/cm. Thola i-engeli ye-diffraction ye-third order!
