Posted by Agu on Monday, April 8, 2013 at 11:55pm.
An object is placed (a)6cm (b)20 from a thin convex lens of focal length 10cm.determine the nature,position and magnification of the image in each case.

physics  drwls, Tuesday, April 9, 2013 at 2:21am
(a) and (b) are separate problems, not multiple choices.
For the first case, letting di be the image distance from the lens, use the standard lens equation
1/6 + 1/di = 1/f = 1/10
1/di = 6/60  10/60 = 4/60 = 1/15
di = 15 cm
The image is "virtual" upright and magnified by a ratio 15/6 = 2.5
Now you do case b

physics  ugochukwu, Thursday, March 10, 2016 at 4:39pm
i dn't no the answer for case b pls help me
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