The Longest Wavelength of Light That Causes Electrons to Be

question 110

Multiple Choice

The longest wavelength of light that causes electrons to be ejected from the surface of a copper plate is 243 nm. What is the maximum velocity of the electrons ejected when light of wavelength 200. nm shines on a copper plate

• A) 1.97 * 10⁴ m/s
• B) 4.67 * 10⁴ m/s
• C) 6.22 * 10⁵ m/s
• D) 1.34 * 10⁶ m/s
• E) 1.48 * 10⁶ m/s

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