plzzz help!
u=20 ,v=21.5 ,f=?
answer using formula or logarithms ..
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Answered by
1
f= 20×21.5/20+21.5
f = 430/41.5
= 10.3614458
sohanq8:
Are u looking for the derivation of that formula?
yesss
wid using formula or logarithms both
but u have not written there to derive the formula
your ans is right
but your not explaining
but u r able to understand na
its not any difficult one
Derivation is a a long one. Please refer some books
Or type in google “Derivation of Mirror Formula”
Answered by
1
maybe usefully..
plz Mark brillante
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