How Was the "Solar Neutrino Problem," That Is, the Detection

question 15

Multiple Choice

How was the "solar neutrino problem," that is, the detection of only a third of the predicted number of solar neutrinos, finally resolved?

• A) It was found that the detection system was faulty and missed many neutrinos it should have counted.
• B) The energy of the neutrinos to be detected had been miscalculated, and different detectors were required to detect neutrinos in the correct range.
• C) The basic physics of the emission of neutrinos in nuclear reactions had been misunderstood, and the predicted number was incorrect.
• D) On the way from the Sun to Earth the neutrino beam changes to a mixture of three types of neutrinos, only one of which was being detected.

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