Intext problem IV — task. Science State Board, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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For a person with hypermeteropia, the near point has moved to $1.5$ $m$. Calculate the focal length of the correction lens in order to make his eyes normal.

The formula to find focal length,

$f = \frac{d \times D}{d - D}$
$f = \frac{d}{D}$

By applying the known values,

$f$ $=$ $m$

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4. Intext problem IV

Exercise condition: