Which type of lens has (a) a positive power, and (b) a negative power? - Science

Short Note

Which type of lens has (a) a positive power, and (b) a negative power?

(a) Convex lens has positive power.
(b) Concave lens has negative power.

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Chapter 5: Refraction of Light - Exercise 7 [Page 261]

Chapter 5 Refraction of Light
Exercise 7 | Q 5 | Page 261

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