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Physics · Oct / Nov 2019 · Paper 12 · Question 21

5054Mass and weight

A metal disc is heated to 600 °C and then lowered into a beaker of water. What happens to the mass of the metal disc and to the mass of the water in the beaker?

  1. Amass of metal disc: increases; mass of water in beaker: decreases
  2. Bmass of metal disc: increases; mass of water in beaker: no change
  3. Cmass of metal disc: no change; mass of water in beaker: decreases
  4. Dmass of metal disc: no change; mass of water in beaker: increases

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Correct answer: C. mass of metal disc: no change; mass of water in beaker: decreases

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