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CBSE Class 12-science Answered

<div>briefly explain mathematically how the focal length of a&nbsp;concave lens will change when it is cut&nbsp;</div> <div>&nbsp;</div> <div>a) vertically &nbsp; at the middle</div> <div>b) horizontally at the middle</div>
Asked by ppratim02 | 12 Jul, 2016, 04:56: PM
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