A thin biconvex lens of focal length f=25cm forms a real image of a real object an a screen. The object is separated by 5cm from the lens. The screen is drawn closer to the lens by a distance 18cm. Through what distance (approximately) must the object be shifted so that its image is again formed on the screen ?

A thin biconvex lens of focal length f=25cm forms a real image of a re

1.	A thin biconvex lens of focal length f=25cm forms a real image of a real object an a screen. The object is separated by 5cm from the lens. The screen is drawn closer to the lens by a distance 18cm. Through what distance (approximately) must the object be shifted so that its image is again formed on the screen ?
Answer» 0.5mm TOWARD left 0.25mm toward left 2.5mm toward left 1.4mm toward left Answer :A

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