Science, asked by coolsanj, 1 year ago

U = 10cm
F = 25cm then find V for convex mirror

Answers

Answered by bhupesh99

given u = -10
f = 25
v=?
1/v = 1/f - 1/u
1/v = 1/25+1/10
1/v = 2+5/50
1/v = 7/50
v = 50/7
v = 7.1

coolsanj: right answer i'm misunderstood you answer is 7.14

bhupesh99: k ra

bhupesh99: every one does wrong

bhupesh99: no probs

coolsanj: This came in my sa 1 my sir saying i was wrong

coolsanj: i know that it's right and you've also proven it

bhupesh99: which school are u??

coolsanj: do you know medaram

bhupesh99: s after 4 months even I'll attend jatara

Answered by Anonymous

$\huge\star\:\:{\orange{\underline{\purple{\mathcal{Solution}}}}}$

$\hookrightarrow\:u\:=\:-10cm$

$\hookrightarrow\:r\:=\:-15cm$

$\hookrightarrow\:f\:=\: \dfrac{-15}{2}$

$\huge{\orange{\underline{\red{\mathscr{We\: know}}}}}$

$\boxed { \dfrac{1}{f}\:=\: \dfrac{1}{u}\:+\: \dfrac{1}{v}}$

$⟹$ $\dfrac{-2}{15}$ $=$ $\dfrac{-1}{10}$ $+$ $\dfrac{1}{v}$

$⟹$ $\dfrac{-2}{15}$ $+$ $\dfrac{-1}{10}$ $=$ $\dfrac{1}{v}$

$⟹$ $\dfrac{-4+3}{30}$ $=$ $\dfrac{1}{v}$

$⟹$ ${ \dfrac{-1}{30}\:=\: \dfrac{1}{v}}$

${\pink{\boxed{\large{\bold{-30\:=\:V}}}}}$

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