Teb: Dav hlau daim iav Dav Hlau Daim iav Rau lub teeb rays tawm lub dav hlau daim iav, lub lub kaum sab xis ntawm kev xav sib npaug ntawm lub kaum sab xis ntawm qhov xwm txheej. … Daim duab tsim los ntawm daim iav dav hlau yog ib txwm virtual (lub ntsiab lus tias lub teeb rays tsis yog los ntawm daim duab), upright, thiab ntawm tib lub duab thiab loj npaum li cov khoom nws yog reflecting. https://en.wikipedia.org › wiki › Plane_mirror
dav hlau daim iav - Wikipedia
daim iav convex, thiab diverging lo ntsiab muag yuav ib txwm tsim cov duab ncaj. Daim iav concave thiab lub lens converging tsuas yog tsim cov duab ncaj ncees yog tias cov khoom nyob hauv pem hauv ntej ntawm focal point.
Yuav ua li cas koj pom cov duab hauv lub lens sib txawv?
Nrhiav thiab kos lub duab ntawm sab saum toj ntawm cov khoom. Cov duab taw tes ntawm sab saum toj ntawm cov khoom yog qhov taw tes uas peb refracted rays sib tshuam. Txij li thaum peb lub rays refracted sib txawv, lawv yuav tsum tau ncua tom qab lub lens thiaj li sib tshuam.
Yuav ua li cas thaum ib yam khoom muab tso rau pem hauv ntej ntawm lub lens converging?
Ib yam khoom raug muab tso rau pem hauv ntej ntawm lub lens converging ntawm qhov deb sib npaug li ob npaug ntawm focal length f1 ntawm lub lens. … Lub teeb ntawm qhov khoom hla mus rau sab xis ntawm lub lens, cuam tshuam los ntawm daim iav, hla mus rau sab laug ntawm lub lens, thiab tsim cov duab kawg ntawm cov khoom.
Qhov twg yuav tsum muab ib qho khoom tso rau pem hauv ntejconvex lens uas cov duab yuav raug txo?
Teb: Ntawm ob zaug ntawm qhov ntev focal ntev, cov duab tsim los ntawm lub lens convex yog tiag tiag thiab ntawm qhov loj tib yam li cov khoom. Yog hais tias lub lens muaj qhov ntev ntawm 20 cm, cov khoom yuav tsum tau muab tso rau 40 cm nyob rau hauv pem hauv ntej ntawm lub lens, tsim ib tug inverted duab ntawm tib lub loj raws li lub hom phiaj, 40 cm qab lub lens.
Thaum ib qho khoom tso rau pem hauv ntej ntawm lub lens converging hom duab tsim?
Ib lub lens converging tsuas yog tsim a virtual duab yog tias cov khoom nyob rau pem hauv ntej ntawm focal point. 3.
