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The refractive index of a glass is 1.5 and that of water is 1.33. If the speed of light in water is 2.25x10⁸ m/s, what is the speed of light in glass?
Physics
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4 stepsIli kutatua tatizo hili, tutatumia uhusiano kati ya fahirisi ya mtawanyiko (refractive index) na kasi ya mwanga katika vyombo tofauti.
- Fahirisi ya mtawanyiko wa kioo () = 1.5
- Fahirisi ya mtawanyiko wa maji () = 1.33 (kutoka "1:8 13" ambayo inamaanisha 1.33)
- Kasi ya mwanga ndani ya maji () =
- Tunahitaji kupata kasi ya mwanga ndani ya kioo ().
Kanuni inayohusisha fahirisi ya mtawanyiko na kasi ya mwanga ni:
Ambapo ni fahirisi ya mtawanyiko na ni kasi ya mwanga katika kati husika.
Andika data ulizopewa.
- Fahirisi ya mtawanyiko wa kioo,
- Fahirisi ya mtawanyiko wa maji,
- Kasi ya mwanga ndani ya maji,
Tumia kanuni inayohusisha fahirisi ya mtawanyiko na kasi ya mwanga.
Tunatumia kanuni:
Panga upya kanuni ili kupata kasi ya mwanga ndani ya kioo ().
Badilisha thamani ulizopewa kwenye kanuni na ufanye hesabu.
Kasi ya mwanga ndani ya kioo ni:
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