What Is the Work Function, E_A, of a Metal from Which

question 31

Multiple Choice

What is the work function, E_A, of a metal from which electrons are ejected with kinetic energy E_kin = 0.5 eV, and the incident light has a wavelength of ë = 460 nm? [h = 6.63 × 10^-34 J s, c = 3 × 10⁸ m/s, 1 eV = 1.6 × 10^-19 J]

• A)1.7 eV
• B)2.2 eV
• C)4.2 eV
• D)4.7 eV

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Definitions:

Bond Issuer

The entity, either a company or government, that borrows funds by issuing bonds.

Bond Premium

The additional amount paid over the face value of a bond, reflecting market interest rates lower than the bond's coupon rate.

Liability

Financial obligations or debts owed by a company to external parties, such as loans, accounts payable, or mortgages.

Annual Amortization

The process of spreading out a loan into a series of fixed payments over a period, with each payment covering part of the principal amount and interest.