Question

5. (0) The ultraviolet catastrophy of 1900 was resolved by Max Planck's proposal. Is it True or False? (Il) Explain your answer choice (IlI) Neil Bohr rejected the view of atomic structure of the 20th century on the basis that the behavior of an electron will results in the destruction of matter, Is it True or False? (IV) Explain your answer choice

Answer 1

ultraviolet catastrophe has the meaning in the sense that an ideal black body which is at thermal equilibrium will radiate radiation with infinite power.

Plank resolved this problem by giving the postulate that electromagnetic energy was radiated in quanta with $$E=h\nu$$ .

therefore for infinite power frequency system needs to be infinite but this is not the practical case.

Bohrs statement is false in the sense that he postulated that electron could exist only in circular orbit while he did not give any explanation . later on debroglie suggested that electron would only exist in orbits corresponding to discrete wave patterns