If the radius of curvature of spherical mirror is 20 cm, what is its focal length?

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लेंस से किसी वस्तु की दूरी u प्रतिबिंब की दूरी v तथा लेंस की फोकस दूरी f हो, तो इन तीनों में क्या संबंध है? Lens Se Kisi Vastu Ki Doori U Pratibimb ki Doori V Tatha Lens Kee Phokas Dooree f Ho, To In Teenon Mein Kya Sambandh Hai?

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लेंस की क्षमता का सूत्र लिखें। 2 मीटर फोकसांतर वाले उत्तल लेंस की क्षमता ज्ञात करें। Lens Ki Chamta Ka Sutra Likhen. 2 Meter Phoksantar Wale Uttal Lens Ki Chamta Gyat Karen.

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If the radius of curvature of spherical mirror is 20 cm, what is its focal length?

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