CBSE Class 10 Answered
1.A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm , find the focal length of the lens?
2. A lens of focal length 20 cm is used to produce a ten times magnified image of a film slide on a screen. how far must the slide be placed from the lens?
Asked by yashpalguglani | 19 Nov, 2016, 02:49: PM
Expert Answer
1.
2.
Answered by Yashvanti Jain | 21 Nov, 2016, 11:21: AM
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