Question:
A bulb is placed at depth of 2 7m in water and a floating
Last updated: 6/10/2023
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A bulb is placed at depth of 2 7m in water and a floating opaque disc is placed over the bulb so that bulb does not appear visible from the surface The minimum radius of the disc is w 4 3 06m 2 7m 49 m 0 12 m