Why did scientists believe in the existence of the neutrino even though it wasn\
ID: 1381775 • Letter: W
Question
Why did scientists believe in the existence of the neutrino even though it wasn't discovered for several years after after the time of its prediction?
They were able to calculate exactly how much mass was being transported away from a parent atom during the gamma decay process.
Scientists were confident in the law of Conservation of energy.
The particles were in fact experimentally discovered first.
They were able to observe their tracks in cloud chambers.
a.They were able to calculate exactly how much mass was being transported away from a parent atom during the gamma decay process.
b.Scientists were confident in the law of Conservation of energy.
c.The particles were in fact experimentally discovered first.
d.They were able to observe their tracks in cloud chambers.
Explanation / Answer
The existence of neutrina were detected during beta emission. The emission of beta particles is accompanied by the emission of neutrino. It was due to the fact that the energy before decay and after decay was conserved if the energy of neutrino is taken into account. Thus, the existence of neutrino is due to the conservation of energy in beta emission. Now, it is accepted that the conversion of neutron into proton emits an electron and anti neutrino. The conversion of proton into neutron to emit positron is accompanied by the emission of neutrino.
Thus, the existence of neutrino was predicted due to the conservation of energy.
Therefore, the correct option is b. Scientists were confident in the law of Conservation of energy.
Option a is not correct as the emission of neutrinois due to beta emission.
Option c is not correct as it was not experimentally discovered first.
Option d is not correct as the existence of neutrino is due to energy consideration. Their tracks are not observed in cloud chambers.
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