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Per NCERT Problem 2.16 (golf ball, mass 40 g, 2% speed uncertainty), why does the uncertainty principle place no meaningful limit on macroscopic objects?
ABecause h becomes zero
BBecause macroscopic objects obey relativity instead
CBecause mass cancels out exactly
DBecause Δx works out to ~10⁻³³ m — ~10¹⁸ times smaller than a nuclear diameter — negligible at any practical scale
Answer & Solution
Correct answer: D. Because Δx works out to ~10⁻³³ m — ~10¹⁸ times smaller than a nuclear diameter — negligible at any practical scale
Per NCERT Problem 2.16 + §2.5.2, for a 40-g ball Δx ≈ 1.46 × 10⁻³³ m — utterly negligible. Significant only for sub-atomic mass.
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