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Solution - Calculate the Focal Length of a Corrective Lens Having Power +2.5 D. - Refraction at Spherical Surfaces and by Lenses - Power of a Lens

ConceptRefraction at Spherical Surfaces and by Lenses Power of a Lens

Question

Calculate the focal length of a corrective lens having power +2.5 D.

Solution

Solution: Data: Convex lens, P = +2.5 D, f = ?

P = 1/f

∴ 2.5 D = 1/f

∴ f = 1/2.5D = 0.4m = 40cm

The focal length of the lens is 40 cm.

Is there an error in this question or solution?

APPEARS IN

2012-2013 (March)
Question 2.3 | 2 marks
Solution for question: Calculate the Focal Length of a Corrective Lens Having Power +2.5 D. concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens. For the courses SSC (English Medium), SSC (Marathi Semi-English)
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