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Home/chapter 13 nuclei

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Vivek01 Kumar
Vivek01 Kumar
Asked: January 20, 2025In: Class 12 Physics

Distinguish between nuclear fission and fusion. Show how in both these processes energy is released.

In both these processes total binding energy of products is more than the total binding energy of reactants. As a result energy is released which is equal to the difference between binding energy of products and binding energy of reactants.

chapter 13 nucleiclass 12 physicsnuclear fission and fusion both processes energy is released
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Vivek01 Kumar
Vivek01 Kumar
Asked: January 20, 2025In: Class 12 Physics

If both the number of protons and neutrons in a nuclear reaction is conserved, in what way is mass converted into energy (or vice versa)? Explain giving one example.

Of course in a nuclear reaction both the number of protons and neutrons (i.e., the mass number as well as atomic number) remains conserved, yet total mass of products is not same as the total mass of reactants. There is ...

chapter 13 nucleiclass 12 physicsmass converted into energy
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Vivek01 Kumar
Vivek01 Kumar
Asked: January 20, 2025In: Class 12 Physics

State two characteristics of nuclear force. Why does the binding energy per nucleon decrease with increase in mass number for heavy nuclei like U?

The binding energy per nucleon decreases with increase in mass number for heavy nuclei like 235U. These nuclei contain a large number of protons which repel one another. As a result of this repulsive force value of B.E. per nucleon ...

chapter 13 nucleiclass 12 physicsthe binding energy per nucleon decrease with increase in mass
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Vivek01 Kumar
Vivek01 Kumar
Asked: January 20, 2025In: Class 12 Physics

Write important features of nuclear forces.

Important features (characteristics) of nuclear forces are given below (i) Nuclear forces are independent of charge. (ii) Nuclear forces are strongest in nature and are about 100 times stronger than electrostatic forces. (iii) The nuclear forces are very short range ...

chapter 13 nucleiclass 12 physicsimportant features of nuclear forces
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Vivek01 Kumar
Vivek01 Kumar
Asked: January 20, 2025In: Class 12 Physics

The variation of binding energy per nucleon with mass number. Give the reason for the decrease of binding energy per nucleon for nuclei with high mass numbers.

For nuclei of high mass number, the number of protons inside the nucleus is more. These protons repel each other. Due to larger force of repulsion on account of greater number of protons present in the nucleus, the value of ...

chapter 13 nucleiclass 12 physicsthe variation of binding energy per nucleon
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