Electrons Are Emitted from a Certain Metal with a Maximum

question 27

Multiple Choice

Electrons are emitted from a certain metal with a maximum kinetic energy of 2 eV when 6-eV photons are incident on its surface. If photons of twice the wavelength are incident on this metal which one of the following statements is true?

• A)No electrons will be emitted.
• B)Electrons will be emitted with a maximum kinetic energy of 3 eV.
• C)Electrons will be emitted with a maximum kinetic energy of 6 eV.
• D)Electrons will be emitted with a maximum kinetic energy of 9 eV.
• E)Electrons will be emitted with a maximum kinetic energy of 12 eV.

---

Definitions:

Purely Competitive

A market structure characterized by a large number of small firms producing identical products with free entry into and exit out of the market.

Entry And Exit

The ease with which new competitors can enter into an industry and existing ones can leave, influencing the competitive dynamics and profitability of a market.

Economic Profits

Economic profits refer to the excess returns a firm makes above its opportunity costs, factoring in both explicit and implicit costs.

Profit-Maximizing

The process of finding the level of output at which a firm makes the highest profit.