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An object of height 3 cm is placed 60 cm from a convex mirror of focal length 15 cm. Position andnature of image will be(option)1)16 cm, virtual and erect3)16 cm, real and inverted3) 12 cm, real and inverted4) 12 cm, virtual and erect |
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Answer» Given, Radius of curvature, R=40cm Object DISTANCE, u=30cm Object height, H o =3CM The focal length of the mirror=f=− 2 R =−20cm From mirror equation, V 1 + u 1 = f 1 ⟹ v 1 + −30 1 = −20 1 ⟹v=−60cm The magnification, M= u −v =− −30 −60 =−2 Hence the image is inverted, ENLARGED, real and its size is 2×3cm=6cm.Explanation: |
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