ConceptRefraction at Spherical Surfaces and by Lenses - Power of a Lens

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#### Question

Find the focal length of a lens of power -2.0 D. What type of lens is this?

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#### Reference Material

Solution for question: Find the focal length of a lens of power -2.0 D. What type of lens is this? concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens. For the course CBSE