TDM said:
onna umbe first question ekatath answer eka demma.,..machan wave length eka harida kiyala balapan,.,mata wachane sure nehe..,i think the symbol of it is "lamda".isn't it...???(machan mama sinhala medium hinda kadda wachaneta exact meaning eka danne ne...
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machan thanx machan answere ekata..... eth exam eka thibba.. oya vage prashnayak thibba. mata n hoyana hati sure naha.. e hindha mama livva mama assume karanava n =2 kiyala 880 frequency ekata.. ita passe velocity hoyala f1 hevva..lakunu keeyak hari hamba vei..
mulinma "n" mama oya dala thiyena vidiyata hoyagena inna one maye hithe....(firts question eke nam n=2 thama.,,,)
anyway kohoma hari anthimata ona wenne lakunune ne..:?<>>:
ela ela umba pass wei baya wenda epa..,,.,.,..,.,.,.,.,.,.,
GOD BLESS YOU
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