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How long would it take a radio wave of f...

How long would it take a radio wave of frequency `6xx10^(3) sec^(-1)` to travel from mars to the earth, a distance of `8xx10^(7)km` ?

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Verified by Experts

The correct Answer is:
`2.66xx10^(2)sec`
Distance to be travelled from mars to earth `=8xx10^(7-)km`
`because` Velocity `= 3xx10^(8) m//sec`
`therefore` Time `=D//V=(8xx10^(10))/(3xx10^(8))=2.66xx10^(2)`sec.
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ALLEN-ATOMIC STRUCTURE-Exercise - 04[A]
  1. How long would it take a radio wave of frequency 6xx10^(3) sec^(-1) to...

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  2. The energy levels of hypothetical one electron atom are shown below ...

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  3. Suppose 10^(-17)J of light energy is needed by the interior of the hum...

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  4. Find the number of photons of radiation of frequancy 5xx10^(13)s^(-1) ...

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  5. The eyes of certain member of the reptile family pass a single visual...

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  6. The wavelength of a certain line in the Pashchen series is 1093.6nm. W...

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  7. Wavelength of the Balmer H, line (first line) is 6565 Å. Calculate the...

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  8. Calculate the Rydberg constant RH if He^+ ions are known to have the ...

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  9. Calculate the energy emitted when electron of 1.0 gm atom of Hydroge...

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  10. A photon having lambda = 854 Å cause the ionization of a nitrogen atom...

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  11. Calculate energy of electron which is moving in the orbit that has its...

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  12. The electron energy in hydrogen atom is given by E(n)=-(2.18 xx 10^(-1...

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  13. Calculate the wavelength in Angstroms of the photon that is emitted wh...

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  14. The velocity of an electron in a certain Bohr orbit of H-atom bears th...

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  15. A doubly ionized lithium atom is hydrogen like with atomic number 3. F...

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  16. Estimate the difference in energy between 1st and 2nd Bohr orbits for ...

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  17. 1.8 g hydrogen atoms are excited by a radiation. The study of species ...

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  18. One mole of He^(o+) ions is excited. An anaylsis showed that 50% of...

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  19. The energy of an excited H-atom is -3.4eV. Calculate angular momentum ...

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  20. The vapours of Hg absord some electron accelerated by a potiential di...

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