Science, asked by Anonymous, 1 year ago

plz solve my question

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Answered by Arey
12
❤❤Image attached if like please thank my answer ❤❤
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Answered by TRISHNADEVI
26
\underline{\underline{\mathbb{\red{ANSWER \: \: }}}}

 \bold{The \: \: person \: \: is \: \: suffering \: \: from \: \: } \\ \bold{hypermetropia.} \\ \\ \bold{So, \: \: the \: \: type \: \: of \: \: lens \: \: needed \: \: to } \\ \bold{correct \: \: this \: \: defect \: \: is \: \: Convex} \\ \bold{Lens.} \\ \\ \bold{The \: \: power \: \: of \: \: the \: \: lens = + 2D}

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 \underline{ \underline {\mathbb{ \red{SOLUTION \: \: WITH \: \: EXPLAINTION \: \: \: }}}}

 \bold{Here,} \\ \\ \bold{Distance \: \: of \: \: image \:, \: \: v= - 50 \: cm} \\ \\ \bold{Distance \: \: of \: \: object \: ,\: \: u = - 25 \: cm} \\ \\ \bold{Focal \: \: length \: \: of \: \: the \: \: lens \: \:, \: f =? }

 \underline{\bold{Using \: \: lens \: \: formula \: ,\: \: we \: \: get,}} \\ \\ \bold{\frac{1}{f} = \frac{1}{v} - \frac{1}{u} } \\ \\ = > \bold{\frac{1}{f} = \frac{1}{( - 50)} - \frac{1}{( - 25)} } \\ \\ \bold{ = > \frac{1}{f} = \frac{1}{( - 50)} + \frac{1}{25} } \\ \\ \bold{ = > \frac{1}{f} = \frac{ - 1 + 2}{50} } \\ \\ \bold{ = > \frac{1}{f} = \frac{ + 1}{50} } \\ \\ \bold{ = > f= + 50} \\ \\ \bold{Focal \: \: length \: \: of \: \: the \: \: lens = + 50\: cm} \\ \\ \bold{ The \: \: focal \: \: is \: \: in \: \: positive \: \: sign.}\\ \\ \bold{So ,\: \: the\: \: type \: \: of \: \: the \: \: lens \: \: is \: \: Convex} \\ \bold{lens.}

 \bold{Now,} \\ \\ \bold{Focal \: \: length \: ,\: f = + 50 \: \: cm }\: \: \\ \\ \bold{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = + 0.5 \: m} \\ \\ \bold{So,} \\ \\ \bold{Power \: \: of \: \: the \: \: lens = \frac{1}{f} } \\ \\ \bold{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1}{ + 0.5} } \\ \\ \bold{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = + 2 \: D}

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 \mathfrak{ \red{THANKS...}}
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