ifos โข paper_2 โข quantum_mechanics
[UPSC IFoS 2012] Foundations of Quantum Mechanics (Q59, 10M)
A lead ball of mass 0\cdot 1\text{ g} is thrown with a velocity of 10^3\text{ cm/sec} through a hole 1\text{ cm} in radius. Calculate the uncertainty in the angle of emergence.
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