Physics - Modern Physics Question with Solution | TestHub
Consider the following statements:
. Atoms of each element emit characteristics spectrum.
According to Bohr's Postulate, an electron in a hydrogen atom revolves in a certain stationary orbit.
The density of nuclear matter depends on the size of the nucleus.
A free neutron is stable but a free proton decay is possible.
Radioactivity is an indication of the instability of nuclei. Choose the correct answer from the options given below.
Options:
Answer:
Solution:
True, an atom of each element emits a characteristic spectrum.
True, according to Bohr's postulates and hence electron resides into orbits of specific radius called stationary orbits.
False, the density of the nucleus is constant.
False, A free neutron is unstable decays into proton and electron and antineutrino.
True unstable nucleus show radioactivity.