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Which of the following statements is correct? (1) The rate of radioactive decay cannot be controlled but that of nuclear fission can be controlled. (2) Nuclear forces are short range, attractive and charge dependent. (3) Nuclei of atoms having same number of neutrons are known as isobars. (4) Wavelength of matter waves is given by de Broglie formula but that of photons is not given by the same formula
- (1) The rate of radioactive decay cannot be controlled but that of nuclear fission can be controlled.
- (2) Nuclear forces are short range, attractive and charge dependent.
- (3) Nuclei of atoms having same number of neutrons are known as isobars.
- (4) Wavelength of matter waves is given by de Broglie formula but that of photons is not given by the same formula
Correct answer: (1) The rate of radioactive decay cannot be controlled but that of nuclear fission can be controlled.
Solution
Radioactive decay is a spontaneous process that occurs at a constant rate for a given isotope, making it unpredictable and uncontrollable, whereas nuclear fission can be initiated and controlled in a reactor, allowing for the regulation of the reaction rate.
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