IGNOU BPHET 141 2026 - The average decay life time of an elementary particle is . Calcul

Question

The average decay life time of an elementary particle is $1.0\text{ }\mu\text{s}$ . Calculate the minimum uncertainty in the measurement of its energy. Also, calculate the minimum uncertainty in the measurement of its mass using the mass-energy equivalence.

19 Jan 2026

Answer :

Word Count : 145

The average decay lifetime of the particle is ( \tau = 1.0,\mu\text{s} = 1.0 \times 10^{-6},\text{s} ). According to the energy–time uncertainty principle, (\Delta E , \Delta t \ge

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