Dab tsi yog qhov pib lub zog hauv cov nyhuv photoelectric?
Dab tsi yog qhov pib lub zog hauv cov nyhuv photoelectric?

Video: Dab tsi yog qhov pib lub zog hauv cov nyhuv photoelectric?

Video: Dab tsi yog qhov pib lub zog hauv cov nyhuv photoelectric?
Video: Qhov txaus ntshai thiab yuav tau ceev faj ntawm tsob kav qeej no yog dab tsi 24 May 2019 2024, Kaum ib hlis
Anonim

Yam tsawg kawg nkaus zog yuav tsum tau eject ib qho electron ntawm qhov chaw hu ua photoelectric ua hauj lwm function. The pib rau lub caij no sib raug rau lub wavelengthof 683 nm. Siv cov wavelength no hauv Planck kev sib raug zoo muab aphoton zog ua 1,82v.

Yog li, dab tsi yog qhov pib zaus rau cov nyhuv photoelectric?

Cov cov nyhuv photoelectric tshwm sim thaum lub teeb saum toj ib yam zaus (cov pib zaus ) isshone ntawm hlau zoo li zinc, qhov no ua rau electrons khiav tawm ntawm zinc. Cov escaping electrons yog hu ua photoelectrons.

Ib yam li ntawd, PHI yog dab tsi hauv photoelectric effect? Cov cov nyhuv photoelectric yog qhov yooj yim nyhuv tias qee zaum thaum koj ci lub teeb rau ntawm cov hlau, cov electrons raug tshem tawm. Muaj ntau qhov kev tshawb pom tseem ceeb uas tau tshawb xyuas hauv chav kawm. 1. Qhov siab tshaj plaws kinetic zog ntawm theelectron yog lub zog ntawm cov photon rho tawm cov thresholdenergy.

Yog li ntawd, txoj cai ntawm photoelectric nyhuv yog dab tsi?

Cov cov nyhuv photoelectric yog ib qho tshwm sim uas cov hluav taws xob tawm ntawm cov hlau nto thaum lub teeb ntawm qhov txaus txaus yog tshwm sim rau. Qhov no txhais tau hais tias lub zog kinetic ntawm electrons nce nrog lub teeb siv. Txawm li cas los xij, lub zog kinetic yog ywj siab ntawm lightintensity.

Puas yog kev ua haujlwm zoo ib yam li lub zog pib?

Txawm tias cov kev ua haujlwm tshwj xeeb yog hais txog zog uas yuav tsum tau muab tso rau hauv, thiab kev tswj hwm hais txog qhov zaus yuav tsum tau eject ib tug electron, lawv yog cov ib yam yam thaum xam nrog theequation.

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