Physics (AS & A Level) · May / June 2023 · Paper 11 · Question 2
What is the best estimate of the number of atoms in a piece of metal of volume 50 cm³?
- A5 × 10¹⁵
- B5 × 10²⁵
- C5 × 10²⁹
- D5 × 10³¹
As printed in the paper
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Correct answer: B. 5 × 10²⁵
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