Thokchado, mirror formula 1/f = 1/v + 1/u oiraga leibakni. Object focus da pole gi mathakta leiba yamna, object distance (u) negative, aduga magnitude da focus gi yam saba leijaba, so 'f' gi manamak positive. Mapham aduda, image virtual, erect, aduga magnified haibadi oiraga, mirror gi pumnamaktada pumnamakta parengba matung inanna.
Houduna, Ima homework tourammi geometry box gi small mirror louthokpada, magnified khara khudak leirammi — principle asiye.
Factory da inspection mirror louthokpada, same concave asi, small screw gi fault magnified tourammi, line ta thajaba oina.
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