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

question 37

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) 0.417\(\lambda\)
• C) 0.3\(\lambda\)
• D) 0.25\(\lambda\)
• E) 0.208\(\lambda\)

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Definitions:

Capital-Budgeting

The process by which organizations evaluate potential major projects or investments to determine their cost-effectiveness and alignment with business strategy.

Risk-Free Rate

The hypothetical yield of a risk-free investment, typically mirrored by the interest rate on sovereign debt.

IRR Method

The Internal Rate of Return method, a capital budgeting technique used to evaluate the profitability of an investment or project.

Hurdle Rate

The minimum acceptable rate of return on an investment, used as a benchmark to determine the viability of the project or investment.