AS Daily A Level Physics question
Two solid blocks are made of the same material. Block X has mass 600 g and Block Y has mass 300 g. Which statement about their volumes must be true?
Answer
The correct answer is A.
Correct: A — The volume of X is twice the volume of Y. A is correct because for the same material (constant density), mass is directly proportional to volume, so 600:300 = 2:1. B is wrong because it inverts the direct proportion, implying a heavier sample would take less volume at the same density. C is wrong because equal volumes at fixed density would require equal masses, which they do not have. D is wrong because it confuses doubling with squaring; four times the volume would require four times the mass (e.g. 1200 g vs 300 g).