A piece of stone weights 180 N in air and 150 N in a beaker...

NECO 2000

A piece of stone weights 180 N in air and 150 N in a beaker containing 160 N of methylated spirit. What is the up thrust exerted on the stone?

A. 50N
B. 40N
C. 30N
D. 20N
E. 10N

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Correct Answer: Option C

Explanation

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A piece of stone weights 180 N in air and 150 N in a beaker...

Correct Answer: Option C

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