An object is placed \( 20 \mathrm{~cm} \) in front of a \( 4 \mathrm{~cm} \) thick plane mi....

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Question An object is placed \( 20 \mathrm{~cm} \) in front of a \( 4 \mathrm{~cm} \) thick plane mirror. The image of the object finally is formed at \( 45 \mathrm{~cm} \) from the object itself. The refractive index of the material of the unpolished side of the mirror is (considering near normal incidence)
(A)  1.5
(B) 1.6
(C) 1.4
(D) None of these📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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