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प्रश्न
Which type of lens has a positive power?
अति संक्षिप्त उत्तर
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उत्तर
A convex lens has positive power.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Which type of lens has a positive power?
A convex lens has positive power.