A Photocathode Whose Work Function Is $2.9 \mathrm { eV }$

question 105

Multiple Choice

A photocathode whose work function is $2.9 \mathrm { eV }$ is illuminated with white light that has a continuous wavelength band from $400 \mathrm {~nm}$ to $700 \mathrm {~nm}$ . What is the range of the wavelength band in this white light illumination for which photoelectrons are not produced? $( c = 3.00 \times 10^8 \mathrm {~m} / \mathrm { s } , h = 6.626$ $\times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } , 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J}$ )

• A) \(480 \mathrm {~nm}\) to \(700 \mathrm {~nm}\)
• B) \(430 \mathrm {~nm}\) to \(700 \mathrm {~nm}\)
• C) \(430 \mathrm {~nm}\) to \(480 \mathrm {~nm}\)
• D) \(400 \mathrm {~nm}\) to \(480 \mathrm {~nm}\)
• E) \(400 \mathrm {~nm}\) to \(430 \mathrm {~nm}\)

Understand the concept of differentiation and its importance in individual autonomy within the family system.

Identify strategies for addressing addiction within the family context, including confronting addiction and supporting recovery.

Analyze the effect of addiction on family structures and roles.

Comprehend the significance of emotional cutoff and its implications in the family dynamic.

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Definitions:

Economically Equivalent

A term used to describe two or more scenarios that have the same economic impact or value, despite being different in form or structure.

Payments

The transfer of money, goods, or services in exchange for a product or service.

Annum

A Latin word that means "year," often used to denote a period of time equal to one calendar year.

Repaid

The act of paying back money that was borrowed.