1 Answer

TaRDy · Answer 1 · 2023-01-16T17:38:41+0000

Apply mirror formula

$\\ \tt\longmapsto (1)/(v)+(1)/(u)=(1)/(f)$

$\\ \tt\longmapsto (1)/(v)=(1)/(f)-(1)/(u)$

$\\ \tt\longmapsto (1)/(v)=(1)/(10)-(1)/(-5)$

$\\ \tt\longmapsto (1)/(v)=(1)/(10)+(1)/(5)$

$\\ \tt\longmapsto (1)/(v)=(1+2)/(10)$

$\\ \tt\longmapsto (1)/(v)=(3)/(10)$

$\\ \tt\longmapsto v=(10)/(3)$

$\\ \bf\longmapsto v=3.3cm$

Now

$\\ \tt\longmapsto m=(-v)/(u)=(-3.3)/(-5)=(3.3)/(5)=0.6$

Now

$\\ \tt\longmapsto m=(h')/(h)$

$\\ \tt\longmapsto h'=mh$

$\\ \tt\longmapsto h'=0.6(3.3)$

$\\ \tt\longmapsto h'=1.98cm$

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