Ray Optics and Optical Instruments: NEET 2021

Hard· Refraction by Lenses (Combination of a Lens and a Mirror)· +4 / −1

A point object is placed at a distance of

60\ \mathrm{cm}

from a convex lens of focal length

30\ \mathrm{cm}

. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of

40\ \mathrm{cm}

from it, the final image would be formed at a distance of : Figure: the object O is on the principal axis,

60\ \mathrm{cm}

to the left of the convex lens. A plane mirror perpendicular to the axis is

40\ \mathrm{cm}

to the right of the lens. Question diagram

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