• # question_answer A concave mirror for face viewing has focal length of 0.4 m. The distance at which you hold the mirror from your face in order to see your image upright with a magnification of 5 is : [JEE Main 9-4-2019 Morning] A) 1.60 m                        B) 0.24 mC) 0.16 m                        D) 0.32 m

$m=\frac{f}{f-u}$           $5=\frac{-40}{-40-u}$           $u=-32cm$ Option