As the speed of an object decreases, its wavelength
A) remains unchanged.
B) decreases.
C) increases.
D) is zero.

Question

Quizplus · Accepted Answer

According to the de Broglie equation, the wavelength ($\lambda$) of an object is inversely proportional to its momentum (p), where momentum is the product of the mass (m) and velocity (v) of the object ($p = mv$). Therefore, as the speed (or velocity) of an object decreases, its momentum decreases, leading to an increase in its wavelength. This is represented by the equation $\lambda = \frac{h}{p}$, where $h$ is Planck's constant.

As the Speed of an Object Decreases, Its Wavelength