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A positive ion having just one electron ...

A positive ion having just one electron ejected it if a photon of wavelength `228Å` or lose is absorbed by it identify the ion

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The correct Answer is:
`He^(+1)`
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RESONANCE ENGLISH-ATOMIC PHYSICS-Exercise 1 Part-1 subjective questions
  1. Find the numerical value fo De Broglie wavelength of an electron in th...

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  2. Find the radius and energy of He^(+) ion in the states (a) n=2, (b) n=...

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  3. A positive ion having just one electron ejected it if a photon of wave...

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  4. Find the temperature at which the average kinetic energy of the molecu...

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  5. A monochromatic light soure of frequency f illuminates a metallic sur...

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  6. Calculate the smaller wavelength of radiation that may be emitted by (...

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  7. Calculate the angular frequency of revolution of an electron occupying...

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  8. Find the quantum number n corresponding to nth excited state of He^(++...

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  9. A gas of hydrogen like ions is prepared in a particular excited state ...

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  10. A stationary hydrogen atom emits photon corresponding to the first lin...

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  11. When a photon is emitted from an atom , the atom recoils.The kinetic e...

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

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  13. A free atom of iron emits Kalpha X-rays of energy 6.4 keV. Calculate t...

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  14. At what minimum kinetic energy must a hydrogen atom move for it's inel...

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  15. Find the cut off wavelength for the continuous X - rays coming from a...

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  16. If the operating potential in an X-ray tube is increased by 1%, by wha...

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  17. If a voltage applied to an X-ray tube is inceased to 1.5 times the min...

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  18. An X-ray tube operates at 40 kV. Suppose the electron converts 70% of ...

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  19. Figure shows the variation of frequency of a characterstic x-ray and a...

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  20. Find the wavelength of the K(alpha) line in copper (Z=29), if the wav...

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