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[" 2.To find the focal length of a conve...

[" 2.To find the focal length of a convex mirror,a student records the following data: "],[" Object pin "|" Convex "quad |" Convex Mirror "|" Image Pin "],[(22.2cm)/(" The focal length of the convex lens is "f_(1)" and that of mirror is "t_(2)." Then taking index correction to be ")],[(1)t_(1)=15.6cm" .and "f_(2)" ,are close to: "],[[(2)t_(1)=15.6cm,t_(2)=25.4cm],[(2)f_(1)=7.8cm,t_(2)=12.7cm],[(3)f_(1)=7.8cm,t_(2)=25.4cm],[(4)f_(1)=12.7cm,t_(2)=7.8cm]]

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