Answered

A pair of glasses on your face produces images that are 4 cm from the lens if the objects are 100 cm away what is the focal length of that lens ?

Answer :

bhuvna789456

Focal Length of the lens is 3.846 cm.

Explanation:

Image Distance ( i ) = 4 cm

Object Distance ( o ) = 100 cm

Find,

Focal length =?

Focal length of pair of glasses can be calculated as -

    [tex]1/f = 1/o + 1/i[/tex]                   .............  ( here 1 / o it's o = object distance )

    [tex]1/f = 1/100 + 1/4\\\\1/f = 0.26\\\\f = 3.846 cm[/tex]

Focal Length of the lens is 3.846 cm.

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