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The Power of a Lens is - 5d. Find Its Focal Length. and Name the Type of Lens. - ICSE Class 10 - Physics

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Question

The power of a lens is - 5D.

1) Find its focal length.

2) Name the type of lens.

Solution

1) Given the power of lens - -5D

focal length (f)

`f = 1/d = 1/(-5) = (-1)/5 = -0.2 m`

2) As power is negative lens is concave.

  Is there an error in this question or solution?

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Solution The Power of a Lens is - 5d. Find Its Focal Length. and Name the Type of Lens. Concept: Types of Lenses (Converging and Diverging),.
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