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Nature of lens A will be positive and its focal length will be 0.1m or 10cm

nature of lensB will be negative  and its focal length will be -0.1 or -10cm
1 5 1
Nature of A lens will be = positive
nature of B lens will be = negative
1 5 1
plz mark as brailest pleaseeeeeeeeeeee pleaseeeeeeeeeeee
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