Physics, asked by sourabhbhai105, 9 months ago

अथवा / UK
एक समतल उत्तल लैंस की वक्रता त्रिज्या 20 सेमी है । काँच का अपवर्तनांक 1.5 है।
फोकस दूरी की गणना कीजिए । uchi
The radius of curvature of a plano-convex lens is 20 cm: Refractive index
of glass is 1.5. Find the focal length of the lens.​

Answers

Answered by pjee1710
0

Answer:40 cm

Explanation:

1/f=(n-1){1/R¹ -1/R²}

R¹=20cm

R²= infinite

n= 1.5

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