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Hydrogen ion and singly ionized helium atom are accelerated, from rest, through the same potential difference. The ratio of final speeds of hydrogen and helium ions is close to:

Option 1 -

1 : 2

Option 2 -

10 : 7

Option 3 -

5 : 7

Option 4 -

2 : 1

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    a month ago
    Correct Option - 4


    Detailed Solution:

    q V = 1 2 m v 2

    ⇒ v = 2 q V m ⇒ v ∝ q m

    v H v H e = 1 1 × 4 1 = 2 1

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