A Lens with a Refractive Index of 1 $\lambda$ Denotes the Wavelength of the Incident Light in Air, What

question 16

Multiple Choice

A lens with a refractive index of 1.5 is coated with a material of refractive index 1.2 in order to minimize reflection. If $\lambda$ denotes the wavelength of the incident light in air, what is the thinnest possible such coating?

• A) 0.5\(\lambda\)
• B) 0.416\(\lambda\)
• C) 0.3\(\lambda\)
• D) 0.208\(\lambda\)
• E) 0.25\(\lambda\)

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Definitions:

Replacement Cost

The amount of money required to replace an asset at the current market value.

Tobin's Q

A ratio comparing the market value of a company's assets to their replacement cost, used to evaluate whether a company is over or undervalued.

Earnings Management

The practice of using accounting techniques to produce financial reports that may mislead stakeholders about a company's financial condition.

Pro Forma Earnings

Pro forma earnings refer to a company's earnings that exclude certain costs or expenses, typically non-recurring items, to provide a clearer picture of its financial performance.