If E, p, m and c denote the energy, linear momentum, mass and speed of light, then the equation representing the correct…
If E, p, m and c denote the energy, linear momentum, mass and speed of light, then the equation representing the correct relation could be
(Shift - II Memory based)
\(E^2=p^2 c^2+m^2 c^4\)
\(\mathrm{In}\mathrm{relativistic}\mathrm{case}\\ \mathrm{m}=\frac{{\mathrm{m}}_{\mathrm{o}}}{\sqrt{1-\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}}}\\ {\mathrm{p}}^{2}=\frac{{\mathrm{m}}_{\mathrm{o}}^{2}{\mathrm{v}}^{2}}{\left(1-\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}\right)}=\frac{{\mathrm{m}}_{\mathrm{o}}^{2}\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}{\mathrm{c}}^{2}}{\left(1-\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}\right)}\\ {\mathrm{p}}^{2}=\frac{{\mathrm{m}}_{\mathrm{o}}^{2}\left(\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}-1+1\right){\mathrm{c}}^{2}}{\left(1-\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}\right)}={\mathrm{m}}_{\mathrm{o}}^{2}{\mathrm{c}}^{2}+\frac{{\mathrm{m}}_{\mathrm{o}}^{2}{\mathrm{c}}^{2}}{\left(1-\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}\right)}\\ {\mathrm{p}}^{2}{\mathrm{c}}^{2}={\mathrm{m}}_{\mathrm{o}}^{2}{\mathrm{c}}^{2}+\left(\frac{{\mathrm{m}}_{\mathrm{o}}}{\sqrt{\left(1-\frac{{\mathrm{v}}^{2}}{{\mathrm{c}}^{2}}\right)}}\right){\mathrm{c}}^{4}\\ {\mathrm{p}}^{2}{\mathrm{c}}^{2}=-{\left({\mathrm{m}}_{\mathrm{o}}{\mathrm{c}}^{2}\right)}^{2}+{\left({\mathrm{mc}}^{2}\right)}^{2}\\ {\left({\mathrm{mc}}^{2}\right)}^{2}={\mathrm{p}}^{2}{\mathrm{c}}^{2}+{\left({\mathrm{m}}_{\mathrm{o}}{\mathrm{c}}^{2}\right)}^{2}\\ {\mathrm{E}}^{2}={\mathrm{p}}^{2}{\mathrm{c}}^{2}+\left({\mathrm{m}}_{\mathrm{o}}^{2}{\mathrm{c}}^{4}\right)\\ \mathrm{E}=\sqrt{{\mathrm{p}}^{2}{\mathrm{c}}^{2}+\left({\mathrm{m}}_{\mathrm{o}}^{2}{\mathrm{c}}^{4}\right)}\\\)
Practice more Board Physics PYQs
See every question on Dual Nature of Radiation and Matter, or browse the full Board question bank.
See all questions on Dual Nature of Radiation and Matter →