Which of the following explanations of the \"solar neutrino problem\" is correct

Question

Which of the following explanations of the "solar neutrino problem" is correct? A. The neutrino detectors that we have built are less effective at detecting neutrinos than we had thought. B. The detectors are fine, but the standard solar model is wrong: The rate at which neutrino-producing reactions are taking place in the core of the sun is less than we had thought. C. The standard solar model is fine, but nuclear physics is wrong: We simply do not understand nuetrino-producing reactions as well as we had thought. D. Nuclear physics is fine: Neutrinos have mass and oscillate between different neutrino flavors as they travel through space

Explanation / Answer

Answer: A. The neutrino detectors we have built are less effective at detecting neutrinos than we had thought.

Explanation: A neutrino is a very low mass particle which are produced by nuclear reactions in the sun and they interacts very weakly with other matter. The lack of correct number of neutrinos was called the Solar Neutrino problem, solar neutrino experiments detected a much lower flux of neutrons than expected, large neutrino detectors were built to find out how many neutrino's passed through earth.

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