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This question concerna a symmetrical lens shown, along with its two focal points. It is made of plastice with n=1.2 and has focal length f. Four different regions are shown: Here, A. -oox lt -fB.-f lt x lt 0 C. 0 lt x lt fD. f lt x lt oo Q. If an object is placed somewhere region (A),in which region does the image appear ? |
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Answer» A `(1)/(F)=(1)/(f_(1))+(1)/(f_(2))=(1)/(f)-(1)/(3f) or F=(3f)/(2)` |
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