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     EduGorilla 
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    A convex glass lens ( = 1.5) has a focal length of 8 cm when placed in air. The focal length of the lens when placed in water ( = 4 ⁄ 3) will be

    Options :-

    1. 16 cm
    2. 32 cm
    3. 4 cm
    4. 8 cm
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