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Author: Tinku Tara

Path-of-the-bomb-released-from-an-aeroplane-moving-with-uniform-velocity-at-certain-height-as-observed-by-the-pilot-is-a-a-straight-line-b-a-parabola-c-a-circle-d-none-of-the-above-

Question Number 16139 by Tinkutara last updated on 18/Jun/17 $$\mathrm{Path}\:\mathrm{of}\:\mathrm{the}\:\mathrm{bomb}\:\mathrm{released}\:\mathrm{from}\:\mathrm{an} \\ $$$$\mathrm{aeroplane}\:\mathrm{moving}\:\mathrm{with}\:\mathrm{uniform} \\ $$$$\mathrm{velocity}\:\mathrm{at}\:\mathrm{certain}\:\mathrm{height}\:\mathrm{as}\:\mathrm{observed} \\ $$$$\mathrm{by}\:\mathrm{the}\:\mathrm{pilot}\:\mathrm{is} \\ $$$$\left({a}\right)\:\mathrm{a}\:\mathrm{straight}\:\mathrm{line} \\ $$$$\left({b}\right)\:\mathrm{a}\:\mathrm{parabola} \\ $$$$\left({c}\right)\:\mathrm{a}\:\mathrm{circle} \\ $$$$\left({d}\right)\:\mathrm{none}\:\mathrm{of}\:\mathrm{the}\:\mathrm{above} \\…

For-2s-orbital-r-1-8-z-a-0-3-2-2-zr-a-0-e-zr-2a-0-then-hydrogen-radial-node-will-be-at-the-distance-of-1-a-0-2-2a-0-3-a-0-2-4-a-0-3-

Question Number 16137 by Tinkutara last updated on 18/Jun/17 $$\mathrm{For}\:\mathrm{2}{s}\:\mathrm{orbital}\:\Psi_{\mathrm{r}} \:=\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{8}}}\left(\frac{\mathrm{z}}{\mathrm{a}_{\mathrm{0}} }\right)^{\frac{\mathrm{3}}{\mathrm{2}}} \left(\mathrm{2}\:−\:\frac{\mathrm{zr}}{\mathrm{a}_{\mathrm{0}} }\right)\mathrm{e}^{−\frac{\mathrm{zr}}{\mathrm{2a}_{\mathrm{0}} }} \\ $$$$\mathrm{then},\:\mathrm{hydrogen}\:\mathrm{radial}\:\mathrm{node}\:\mathrm{will}\:\mathrm{be}\:\mathrm{at} \\ $$$$\mathrm{the}\:\mathrm{distance}\:\mathrm{of} \\ $$$$\left(\mathrm{1}\right)\:\mathrm{a}_{\mathrm{0}} \\ $$$$\left(\mathrm{2}\right)\:\mathrm{2a}_{\mathrm{0}} \\ $$$$\left(\mathrm{3}\right)\:\frac{\mathrm{a}_{\mathrm{0}}…

Photoelectric-emission-is-observed-from-a-surface-when-lights-of-frequency-n-1-and-n-2-incident-If-the-ratio-of-maximum-kinetic-energy-in-two-cases-is-K-1-then-Assume-n-1-gt-n-2-threshold-f

Question Number 16136 by Tinkutara last updated on 18/Jun/17 $$\mathrm{Photoelectric}\:\mathrm{emission}\:\mathrm{is}\:\mathrm{observed}\:\mathrm{from} \\ $$$$\mathrm{a}\:\mathrm{surface}\:\mathrm{when}\:\mathrm{lights}\:\mathrm{of}\:\mathrm{frequency}\:{n}_{\mathrm{1}} \\ $$$$\mathrm{and}\:{n}_{\mathrm{2}} \:\mathrm{incident}.\:\mathrm{If}\:\mathrm{the}\:\mathrm{ratio}\:\mathrm{of}\:\mathrm{maximum} \\ $$$$\mathrm{kinetic}\:\mathrm{energy}\:\mathrm{in}\:\mathrm{two}\:\mathrm{cases}\:\mathrm{is}\:\mathrm{K}\::\:\mathrm{1} \\ $$$$\mathrm{then}\:\left(\mathrm{Assume}\:{n}_{\mathrm{1}} \:>\:{n}_{\mathrm{2}} \right)\:\mathrm{threshold} \\ $$$$\mathrm{frequency}\:\mathrm{is} \\ $$$$\left(\mathrm{1}\right)\:\left(\mathrm{K}\:−\:\mathrm{1}\right)\:×\:\left(\mathrm{K}{n}_{\mathrm{2}}…

An-electron-is-moving-in-3-rd-orbit-of-Hydrogen-atom-The-frequency-of-moving-electron-is-1-2-19-10-14-rps-2-7-3-10-14-rps-3-2-44-10-14-rps-4-7-3-10-10-rps-

Question Number 16135 by Tinkutara last updated on 18/Jun/17 $$\mathrm{An}\:\mathrm{electron}\:\mathrm{is}\:\mathrm{moving}\:\mathrm{in}\:\mathrm{3}^{\mathrm{rd}} \:\mathrm{orbit}\:\mathrm{of} \\ $$$$\mathrm{Hydrogen}\:\mathrm{atom}.\:\mathrm{The}\:\mathrm{frequency}\:\mathrm{of} \\ $$$$\mathrm{moving}\:\mathrm{electron}\:\mathrm{is} \\ $$$$\left(\mathrm{1}\right)\:\mathrm{2}.\mathrm{19}\:×\:\mathrm{10}^{\mathrm{14}} \:\mathrm{rps} \\ $$$$\left(\mathrm{2}\right)\:\mathrm{7}.\mathrm{3}\:×\:\mathrm{10}^{\mathrm{14}} \:\mathrm{rps} \\ $$$$\left(\mathrm{3}\right)\:\mathrm{2}.\mathrm{44}\:×\:\mathrm{10}^{\mathrm{14}} \:\mathrm{rps} \\…

The-mathematical-expression-which-is-true-for-the-uncertainty-principle-is-1-x-v-h-4pi-2-E-x-h-4pi-3-h-4pi-4-x-m-h-4pi-

Question Number 16134 by Tinkutara last updated on 18/Jun/17 $$\mathrm{The}\:\mathrm{mathematical}\:\mathrm{expression}\:\mathrm{which} \\ $$$$\mathrm{is}\:\mathrm{true}\:\mathrm{for}\:\mathrm{the}\:\mathrm{uncertainty}\:\mathrm{principle}\:\mathrm{is} \\ $$$$\left(\mathrm{1}\right)\:\left(\Delta{x}\right)\:\left(\Delta{v}\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$$$\left(\mathrm{2}\right)\:\left(\Delta\mathrm{E}\right)\:\left(\Delta{x}\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$$$\left(\mathrm{3}\right)\:\left(\Delta\theta\right)\:\left(\Delta\phi\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$$$\left(\mathrm{4}\right)\:\left(\Delta{x}\right)\:\left(\Delta\mathrm{m}\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$ Terms of Service…

H-line-of-Balmer-series-is-6500-A-o-The-wave-length-of-H-is-1-4815-A-o-2-4298-A-o-3-7800-A-o-4-3800-A-o-

Question Number 16133 by Tinkutara last updated on 18/Jun/17 $$\mathrm{H}_{\alpha} \:\mathrm{line}\:\mathrm{of}\:\mathrm{Balmer}\:\mathrm{series}\:\mathrm{is}\:\mathrm{6500}\:\overset{\mathrm{o}} {\mathrm{A}}.\:\mathrm{The} \\ $$$$\mathrm{wave}\:\mathrm{length}\:\mathrm{of}\:\mathrm{H}\gamma\:\mathrm{is} \\ $$$$\left(\mathrm{1}\right)\:\mathrm{4815}\:\overset{\mathrm{o}} {\mathrm{A}} \\ $$$$\left(\mathrm{2}\right)\:\mathrm{4298}\:\overset{\mathrm{o}} {\mathrm{A}} \\ $$$$\left(\mathrm{3}\right)\:\mathrm{7800}\:\overset{\mathrm{o}} {\mathrm{A}} \\ $$$$\left(\mathrm{4}\right)\:\mathrm{3800}\:\overset{\mathrm{o}}…