Categories > Ray Optics and Optical Instruments > Refraction at Curved Surface > A glass convex lens $({{\mu }_{g}}=1.5)$ has a focal length of $8\,cm$ when placed in air. What would be the focal length of the lens when it is immersed in water ( ${{\mu }_{w}}=1.33$)

Ray Optics and Optical Instruments

Question: A glass convex lens $({{\mu }_{g}}=1.5)$ has a focal length of $8\,cm$ when placed in air. What would be the focal length of the lens when it is immersed in water ( ${{\mu }_{w}}=1.33$)


1) 2 m
2) 4 cm
3) 16 cm
4) 32 cm
Solution: Explanation: No Explanation
Refraction at Curved Surface

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