O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms:
1. | is not important because nuclear forces are short-ranged |
2. | is as important as electrostatic force for binding the two atoms |
3. | cancels the repulsive electrostatic force between the nuclei |
4. | is not important because oxygen nucleus have equal number of neutrons and protons |
The gravitational force between H-atom and another particle of mass m will be given by Newton's law \(F=\frac{GMm}{r^2},\) where r is
in km and
1. | M=mproton+melectron. |
2. | M=mproton+melectron-\(\frac{B}{c^2}\) ( B=13.6 eV ). |
3. | M is not related to the mass of the hydrogen atom. |
4. | M=mproton+melectron-\(\frac{|V|}{c^2}\) ( |V| = magnitude of the potential energy of electron in the H-atom). |
Mx and My denote the atomic masses of the parent and the daughter nuclei respectively in radioactive decay. The Q-value for a decay is Q1 and that for a decay is Q2. If denotes the mass of an electron, then which of the following statements is correct?
1.
2.
3.
4.