What Is the Longest Wavelength of Light That Can Cause

question 36

Multiple Choice

What is the longest wavelength of light that can cause photoelectron emission from a metal that has a work function of $2.20 \mathrm { eV } ? \left( 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J} , c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$

• A) \(610 \mathrm {~nm}\)
• B) \(565 \mathrm {~nm}\)
• C) \(257 \mathrm {~nm}\)
• D) \(344 \mathrm {~nm}\)
• E) \(417 \mathrm {~nm}\)

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Definitions:

Altered States

Variations from an individual's normal mental state, which can be induced by various methods such as meditation, drug use, or hypnosis, often resulting in different perceptions or consciousness.

Consciousness

Consciousness is the state of being aware of and able to think about one's own existence, sensations, thoughts, surroundings, and experiences.

Daydreaming

A short-term detachment from one's immediate surroundings, during which a person's attention is focused on internal thoughts or fantasies.

Altered State

A condition of consciousness that is significantly different from normal waking consciousness, often induced by methods such as meditation, drugs, or hypnosis.