TS EAMCET 04 May 2019 Shift 2 Solved Paper

Section: Physics
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Question : 117 of 160
 
Marks: +1, -0
The half life of neutron is 693 seconds. What fraction of neutrons will decay when a beam of neutrons, having kinetic energy 0.084 eV, travells a distance of 1 km?
(mass of neutron = 1.68 × 10−27 kg, and ln 2 = 0.693)
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