What Is the Number of Photons Per Second Given Off

question 11

Multiple Choice

What is the number of photons per second given off by a light bulb with a power of 100 Watts operating at an efficiency of 4.80%? Assume the wavelength of light to be 600 nm.

• A) 6.34 × 10¹⁸ photons/s
• B) 5.42 × 10¹⁸ photons/s
• C) 3.11 × 10¹⁸ photons/s
• D) 25.3 × 10¹⁸ photons/s
• E) 14.5 × 10¹⁸ photons/s

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Definitions:

Marginal Investor's Risk Aversion

A concept that describes the level of additional risk an investor is willing to take for a marginal increase in potential return.

SML

Stands for the Security Market Line, representing the expected return of investments as a function of their non-diversifiable risk.

Risk-Free Asset

An investment that is expected to return its full face value with zero risk of financial loss.

Required Rate of Return

The minimum annual percentage earned by an investment that will entice individuals or companies to put money into a particular security or project.