The focal length of a convex lens is 30 cm and the size of the image is half the size of the object. The object distance is
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The focal length of convex lens is 30 cm and the size of image is quarter of the object,then the object distance is:
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ANSWER
Given that,
Focal length f=30cm
Image distance =v
Object distance =u
Hence, The object is in front of mirror at a distance 90 cm
Explanation:
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