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| Q. |
Isobar is produced by the emission of which of the following? |
| A. | X-ray |
| B. | Gamma ray |
| C. | Beta ray |
| D. | Alpha ray |
| Answer» C. Beta ray | |
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Explanation: Isobar, in nuclear physics, any member of a group of atomic or nuclear species all of which have the same mass number-that is, the same total number of protons and neutrons. In beta decay, mother and daughter nuclei are always isobars, because either a neutron is converted to a protonor a proton is converted to a neutron in the process. |
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