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Vijay is 16 yr old and wears a spectacle...

Vijay is 16 yr old and wears a spectacle having a power of -2D. Answer the following questions:
Compute the focal length of his lens.

Text Solution

Verified by Experts

`P=-2D`
`f=1/P`
`=-1/2`
`=-0.5" m"`
`therefore " focal length = 0.5 metre" `
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