Physics · Illumination
यदि 'CP' ऊंचाई 'H' पर स्थित एक स्रोत की कैंडल पावर है और 'D' स्रोत और जमीन पर एक बिंदु के बीच की दूरी है जहां D > H है, तो स्रोत के ठीक नीचे लंबवत प्रदीप्ति (illumination) किसके द्वारा दी जाती है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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CP H 2
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