Question
When the momentum of a proton is changed by an amount P0, the corresponding change in the de-Broglie wavelength is found to be 0.25%. Then, the original momentum of the proton was
Answer: Option C
:
C
λ∝1p⇒Δpp=−Δλλ⇒∣∣Δpp∣∣=∣∣Δλλ∣∣⇒p0p=0.25100=1400⇒p=400p0.
Note: The above method is applicable only whenthe changes in wavelength or momenta are small.
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:
C
λ∝1p⇒Δpp=−Δλλ⇒∣∣Δpp∣∣=∣∣Δλλ∣∣⇒p0p=0.25100=1400⇒p=400p0.
Note: The above method is applicable only whenthe changes in wavelength or momenta are small.
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