The focal length of a mirror is given by { 1 }/ { v } - { 1 }/ { u } = { 2 }/ { f }. If equal errors α are made in measuring u and v then relative error in f is

\alpha( { 1 }/ { u } - { 1 }/ { v } )

\alpha( { 1 }/ { u } + { 1 }/ { v } )

AP and TS EAMCET Engineering Model Paper 6

Question : 24 of 160

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The focal length of a mirror is given by

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. If equal errors α are made in measuring u and v then relative error in f is

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