JEE Mains · Physics · STD 12 - 2. Electric potential and capacitance
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......
- A \(5:7\)
- B \(1:2\)
- C \(10:7\)
- D \(2:1\)
Answer & Solution
Correct Answer
(D) \(2:1\)
Step-by-step Solution
Detailed explanation
\(q \Delta V =\frac{1}{2} mV ^{2} \Rightarrow v =\sqrt{\frac{2 q \Delta V }{ m }}\) \(\therefore \frac{ V _{1}}{ V _{2}}=\sqrt{\frac{ e }{ m } \frac{4 m }{ e }}=2\)
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