An Electron Has the Same De Broglie Wavelength as the Wavelength

question 45

Multiple Choice

An electron has the same de Broglie wavelength as the wavelength of a 1.8 eV photon.What is the speed of the electron? (m_electron = 9.11 × 10^-31 kg,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10^-19 J)

• A)1,100 m/s
• B)980 m/s
• C)910 m/s
• D)840 m/s
• E)770 m/s

---

Definitions:

Encoding

The method through which data is converted into a form that can be retained in memory.

Recall

The process of retrieving information from memory that has been previously encoded and stored.

State-dependent Memory

The phenomenon where information learned in a particular state of mind (e.g., emotional or physiological state) is more easily recalled when in the same state.

Prefrontal Cortex

The part of the brain located at the front of the frontal lobes, involved in complex behaviors including planning, decision making, and moderating social behavior.