The de-Broglie wavelength of a proton and α -particle are equal. The ratio of their velocities is: (a) 4: 2 (b) 4: 3 (c) 4: 1 (d) 1: 4

Answer: (c). Equal λ means equal momentum: mp vp = mα vα. (vp)/(vα) = (mα)/(mp) = 4 So the answer is (c) 4: 1.

The de-Broglie wavelength of a proton and α -particle are equal. The… | JEE Main 2021 (24 Feb, Shift 2)

Q97JEE Main 2021 · 24 FEB · SHIFT 2Easy

Matter Waves: de Broglie Wavelength

The de-Broglie wavelength of a proton and $\alpha$ -particle are equal. The ratio of their velocities is:

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Answer: (c)

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