A piece of steel has a weight W in air. W1 when completely immersed in water and W2 when completely immersed in an unknown liquid. the relative density (specific gravity) of liquid is :
A
W−W1W−W2
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B
W−W2W−W1
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C
W1−W2W−W1
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D
W1−W2W−W2
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Solution
The correct option is AW−W1W−W2 Weight of the body in any liquid = Weight in air- Buoyancy force