A piece of iron weights 250 N in air and 200 N in a liquid…

A piece of iron weights 250 N in air and 200 N in a liquid of density 1000 kgm-3. the volume of the iron is?
  • A.
    5.0 x 10-2 ms-2
  • B.
    4.5 x 10–2 ms-3
  • C.
    2.5 x 10-2 ms-8
  • D.
    2.0 x 10-2 ms-3
Correct Answer: Option C
Explanation

With in the air = 250N
wt. in the liquid = 200N
loss in wt. in the liquid = 250 – 200 = 50N
∴ Wt. the liquid of equal vol. of the iron = 50N
∴If the density of the liquid is 1000 lgm-3
then the volume of the liquid = (N)/D = V = (25kg)/1000 =0.025m3 = 2.5 x 10-2 m8.

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