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A glass plate of length 10 cm, breadth 4...

A glass plate of length 10 cm, breadth 4 cm, and the thickness 0.4cm , weighs 20g in air. It is held vertically with long side horizontal and half the plate immersed in water. What will be its apparent weight? Surface tension of water = `70 dyn e//cm`.

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The correct Answer is:
`5.46xx10^(-3)` kg
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