Of the following,which has the shortest de Broglie wavelength?
A)an airplane moving at a velocity of 350 mph
B)a helium nucleus moving at a velocity of 800 mph
C)a nitrogen molecule moving at a velocity of 900 mph
D)a nitrogen molecule moving at a velocity of 5000 mph

Question

Quizplus · Accepted Answer

De Broglie wavelength is inversely proportional to velocity, so the object with the highest velocity will have the shortest de Broglie wavelength. Among the given options, the airplane (A) with a velocity of 350 mph has the lowest velocity and hence the longest de Broglie wavelength. Therefore, option A has the shortest de Broglie wavelength.

Of the Following,which Has the Shortest De Broglie Wavelength