The radius of dees in a cyclotron is `1.9` m and the magnetic field applied on the cyclotron is `0.8` T. Calculate the energy gained by an emergent proton in cyclotron in keV. Mass of proton is `1.67 xx 10^(-27)` kg.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Identify the given values
- Radius of the cyclotron (r) = 1.9 m
- Magnetic field (B) = 0.8 T
- Mass of the proton (m_p) = \(1.67 \times 10^{-27}\) kg
- Charge of the proton (q) = \(1.6 \times 10^{-19}\) C

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