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JEE Main 2024 Physics question

PhysicsAtomsJEE Main 2024

When a hydrogen atom going from n = 2 to n = 1 emits a photon, its recoil speed is m/s. Where x = . (Use mass of hydrogen atom = 1.6 × 10⁻²⁷ kg)

Answer: 17

Solution

ΔE = 13.6(1 − 1/4) = 10.2 eV. The recoil speed is v = p/m = E/(mc) =

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Question ID VK-016863