By the succesive disintegration of ₉₂U²³⁸, the final product obtained is ₈₂Pb²⁰⁶, then
By the succesive disintegration of ₉₂U²³⁸, the final product obtained is ₈₂Pb²⁰⁶, then how many number of α and β-particles…
7 years ago
Radioactivity
During negative β-decay
During negative β-decay Options (a) Neutron converts into proton (b) Proton converts into neutron (c) Neutron proton ratio increases (d)…
7 years ago
In atom bomb, the reaction which occurs is
In atom bomb, the reaction which occurs is Options (a) fusion (b) controlled fission (c) uncontrolled fission (d) thermonuclear Correct…
7 years ago
1 curie is equal to
1 curie is equal to Options (a) 3x10¹⁰ disintegrations/sec (b) 3.7x10⁷ disintegrations/sec (c) 5x10⁷ disintegrations/sec (d) 3.7x10¹⁰ disintegrations/sec Correct Answer:…
7 years ago
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is Options (a) ᵐ⁻⁶ₙ₋₄ Z…
7 years ago
If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength of radiation required to excite the…
7 years ago
Activity of a radioactive sample decreases to (1/3)rd of its original value
Activity of a radioactive sample decreases to (1/3)rd of its original value in 3 days. Then, in 9 days its…
7 years ago
An α-particle of energy 5 MeV is scattered through 180⁰ by a fixed uranium nucleus.
An α-particle of energy 5 MeV is scattered through 180⁰ by a fixed uranium nucleus. The distance of the closest…
7 years ago
The half-life of radioactive element is 600 yr. The fraction of sample
The half-life of radioactive element is 600 yr. The fraction of sample that would remain after 3000 yr is Options…
7 years ago
The approxiamate ratio of nuclear mass densities of ₇₉Au¹⁹⁷ and ₄₇ Ag¹⁰⁷ nuclei is
The approxiamate ratio of nuclear mass densities of ₇₉Au¹⁹⁷ and ₄₇ Ag¹⁰⁷ nuclei is Options (a) (197:107) (b) (47:79) (c)…
7 years ago