state gov OSSC Traffic and Excise Police SI Mock Test Series 2024 General Science Physics Optics

ସମତଳ ଦର୍ପଣର ଫୋକାଲ ଲମ୍ବ କେତେ?

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ନକାରାତ୍ମକ
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ଅସୀମତା 
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ଶୂନ
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ଦିଆଯାଇଥିବା ସମସ୍ତ ବିକଳ୍ପ 
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