An object 4cm in size is placed 25cm in front of a concave mirror of focal length 15cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Find the nature and size of the image. Plz answer asap....
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∴Screen should placed at distance of 37.5 cm from mirror to obtain a sharp image. ∴ Image is real and inverted and size is 6 cm below principal axis. Ho=4cm. u= -25cm f= -15cm ( since it is concave mirror)
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