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Ashoke and Ravi stood before a plane mirror at a distance of 3 m from it. Ashok walked 5 steps towards the mirror, each step measuring 30 cm. Ravi walked 8 steps away from the mirror, each step measuring 25 cm. The distance between Ravi and the image of Ashoke in the mirror is ______ m. |
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Answer» 5.5 m After Ashok moved 5 steps towards the mirror, then his distance from the mirror =3m -5(30) cm =3 m=-1.5 m `=1.5 m`. After Ravi moved away from the mirro, his distance from the mirror =3m + 8(25) cm =3m + 2m =5 m Therefore , the distance between Ravi and the image of Ashok =1.5 m + 5 m =6.5 m. Hence, the correct option is (d) |
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