A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter nucleus is
Options
(a) A-4/4v (b) 4v/A-4 (c) v (d) v/4
Correct Answer:
4v/A-4
Explanation:
According to the […]
Pick out the correct statements from the following I. Electron emission during β-decay is always accompanied by neutrons II. Nuclear force is charge independent III. Fusion is the chief source of stellar energy
Options […]
The phenomenon of radioactivity
Options
(a) increases on applied pressure (b) is exothermic change which increases or decreases with temperature (c) is nuclear process which does not depend on external forces (d) None […]
The purpose of using heavy water in nuclear reactor is
Options
(a) to increase the energy released in nuclear fission (b) to cool the reactor to room temperature (c) to make the dynamo […]
In radioactive element, β-rays are emitted from
Options
(a) Nucleus (b) Outer orbit (c) Inner orbit (d) None of these
Correct Answer:
Nucleus
Explanation:
β-rays are emitted from nucleus.
A U²³⁵ reactor generates power at a rate of P producing 2×10⁸ fission per second. The energy released per fission is 185 MeV. The value of P is
Options
(a) 59.2 MW (b) […]
When ₉₀Th²²⁸ transforms to ₈₃Bi²¹², the number of emitted α and β particles are respectively
Options
(a) 8 α,7 β (b) 4 α,7 β (c) 4 α,4 β (d) 4 α,1 β
Correct Answer: […]
The S.I. unit of radioactivity is
Options
(a) Roentgen (b) Rutherford (c) Curie (d) Becquerel
Correct Answer:
Becquerel
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The nuclear fusion reaction between deutrium and tritium takes place
Options
(a) at low temperature and low pressure (b) at very high temperature and very high pressure (c) when the temperature is near […]
In a given reaction, ᴢXᴬ → ᴢ+1Yᴬ → ᴢ-1Kᴬ⁻⁴ → ᴢ-1Kᴬ⁻⁴ The radioactive radiations are emitted in the sequence of
Options
(a) α,β,γ (b) γ,α,β (c) β,α,γ (d) γ,β,α
Correct Answer:
β,α,γ
Explanation: […]
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