What is nuclear physics class 12?
Nuclear physics is the branch of physics that studies atomic nuclei and their constituents and interactions. Examples of nuclear interactions or nuclear reactions include radioactive decay, nuclear fusion and fission.
What is the nucleus in physics short notes?
Nucleus as a whole is a positively-charged entity, but its constituents, that is, protons (positively charged) and neutrons are neutral(no charge). The overall charge on the nucleus is due to only protons. An atom consists of electrons, protons and neutrons.
What is the structure of an atom and nuclei notes Class 12?
Structure of an Atom: The atom consists of a central nucleus and extranuclear electrons. The nucleus is positively charged and contains protons and neutrons. Protons carry a positive charge, whereas neutrons are neutral.
What is binding energy class 12 physics notes?
By definition, the binding energy is equal to the input energy. When the pieces are separated, they are in rest; the total rest mass is increased as the energy put into them increases when compared to their glued together state as the nucleus. That mass increase is thus Δm = BE/c2.
Who is the father of nuclear physics?
Ernest Rutherford, a British physicist probed atoms with alpha particles. He was known as the “father of nuclear physics”. He was awarded the Nobel prize for his contribution to the structure of the atom in 1908.
Is nuclear physics hard?
The science behind nuclear energy is incredibly complex and requires expert knowledge and training to safely extract power from the nuclei of atoms, usually from nuclear physicists .
What is the main function of nucleus?
Nucleus Function It contains the cell’s hereditary information and controls the cell’s growth and reproduction. The nucleus has been clearly explained as a membrane-bound structure that comprises the genetic material of a cell.
What is a nucleus PDF?
It is. the “CONTROL CENTER” of the cell. It was First cell organelle to be discovered It is membrane bound organelle found in eukaryotic cells. Main functions are – to maintain the integrity of genes – to control the activities of the cell by regulating gene expression . Page 5.
What is the main definition of nucleus?
A nucleus, as related to genomics, is the membrane-enclosed organelle within a cell that contains the chromosomes. An array of holes, or pores, in the nuclear membrane allows for the selective passage of certain molecules (such as proteins and nucleic acids) into and out of the nucleus.
What is the mean life class 12?
Ans : Mean life: It is the sum of the life span of a specific number of nuclei and divided by the number of nuclei. Let dN be the number of nuclei disintegrate in the time interval dt. For example, the mean life of a 14C nucleus with T1/2 = 5730 a is 8267 years.
How is the nucleus structure?
Irrespective of the exact shape and size of the nucleus, the nuclear structure can be generally divided into two distinct compartments: (i) The nuclear envelope, consisting of the inner and outer nuclear membrane, the nuclear pores, and the nuclear lamina, and (ii) the nuclear interior, comprised of chromatin, the …
What is the structure of the nucleus called?
The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm; and the nuclear matrix, a network within the nucleus that adds mechanical support.
Which chapter is nuclear physics class 12?
NCERT Solutions for Class 12 Physics Chapter 13 Nuclei.
What is nuclear physics with example?
Nuclear physics is the study of the protons and neutrons at the centre of an atom and the interactions that hold them together in a space just a few femtometres (10-15 metres) across. Example nuclear reactions include radioactive decay, fission, the break-up of a nucleus, and fusion, the merging of nuclei.
Why is it called nuclear physics?
At the center of each atom is a tiny core called a nucleus that is surrounded by a cloud of electrons—electrically charged particles that move in the outer regions of the atom. Nuclear physics is the study of the properties of nuclei and their relationship to the fundamental constituents and laws of nature.
What is nuclear chemistry in class 12?
Nuclear chemistry is the study of the physical and chemical properties of elements which are influenced by changes in the structure of the atomic nucleus.