The Longest Wavelength of Light That Causes Electrons to Be

question 106

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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Definitions:

Tibia

A large bone located in the lower leg, also known as the shinbone, that bears much of the body’s weight.

Plantar Surface

The bottom part of the foot that comes in contact with the ground.

Extension

A movement increasing the angle between bones or parts of the body, opposite of flexion.

Flexion

The act of bending a joint or limb in the body by the action of flexors.