Q19.The decay of a proton to neutron is : (1) not possible as proton mass is less than the (2) possible only inside the nucleus neutron mass (3) not possible but neutron to proton conversion is (4) always possible as it is associated only with β+ possible decay
What This Question Tests
This question tests the understanding of nuclear stability and the conditions under which a proton can transform into a neutron via β+ decay, specifically highlighting that this process requires energy compensation from nuclear binding energy, making it possible only inside a nucleus.
Concepts Tested
📚 NCERT Sections This Tests
13.5 — The Q Value Of A Nuclear Reaction A + B ® C + D Is Defined By
Physics Class 12 · Chapter 13
13.5 The Q value of a nuclear reaction A + b ® C + d is defined by Q = [ mA + mb – mC – md]c2 where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reactions and state whether the reactions are exothermic or endothermic. (i) 11 H+13 H →12 H+12 H (ii) 126 C+126 C →1020 Ne+ 24 He Atomic masses are given to be m ( 12 H ) = 2.014102 u m ( 13 H) = 3.016049 u m ( 126 C ) = 12.000000 u m ( 1020 Ne ) = 19.992439 u
13.2 — Obtain The Binding Energy Of The Nuclei 5626Fe And 20983 Bi In Units Of
Physics Class 12 · Chapter 13
13.2 Obtain the binding energy of the nuclei 5626Fe and 20983 Bi in units of MeV from the following data: m ( 5626Fe ) = 55.934939 u m ( 20983 Bi ) = 208.980388 u
13.3 — A Given Coin Has A Mass Of 3.0 G. Calculate The Nuclear Energy That
Physics Class 12 · Chapter 13
13.3 A given coin has a mass of 3.0 g. Calculate the nuclear energy that would be required to separate all the neutrons and protons from each other. For simplicity assume that the coin is entirely made of 6329Cu atoms (of mass 62.92960 u).
📋 Question Details
- Chapter
- Nuclei
- Topic
- Nuclear stability and radioactivity
- Year
- 2021
- Shift
- 18 Mar Shift 2
- Q Number
- Q19
- Type
- Conceptual
- NCERT Ref
- Class 12 Physics Ch 13: Nuclei
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