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Physics Test 48...

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  • Question 1
    4 / -1

    A proton is accelerated through a potential difference of 400 V. To have same de-Broglie wavelength, what potential difference must be applied across doubly ionised 8O16 atom :-

  • Question 2
    4 / -1

    The wave number of a photon in Brakett series of hydrogen atom is 9/4 R. The electron has transited from the orbit having quantum number :-
     

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