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Light Reflection and Refraction | Light Reflection and Refraction - Exercise 10.5

Question 8

A doctor has prescribed a corrective lens of power +2 D. What is the focal length of the lens?

(Hint: Power of lens (P) = 1/f )

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Power of lens (P) = 1/f

P = 1.5D

f = 1/2 = 0.5 m

A convex lens has a positive focal length. Therefore, it is a convex lens or a converging lens.

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subject-cta

Question 8

A doctor has prescribed a corrective lens of power +2 D. What is the focal length of the lens?

(Hint: Power of lens (P) = 1/f )

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Power of lens (P) = 1/f

P = 1.5D

f = 1/2 = 0.5 m

A convex lens has a positive focal length. Therefore, it is a convex lens or a converging lens.

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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