focal ratio the ratio of the focal lenght of a lens to its aperture – Meaning and Explanation

Part of speech : Phrase

Urdu Meaning (اردو معنی)

ماسکی نسبت ، عدد ماسکہ ، کسی عدسہ کے طول ماسکہ کو اس کے حقیقی قطر سے تقسیم کرنے سے حاصل کرنے والا عدد ۔

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