An Oil Film with Refractive Index 1

question 8

Multiple Choice

An oil film with refractive index 1.48 and thickness 290 nm is floating on water and illuminated with white light at normal incidence.What is the wavelength of the dominant color in the reflected light?

• A)green (541 nm)
• B)blue-green (493 nm)
• C)violet (404 nm)
• D)yellow (572 nm)
• E)blue (470 nm)

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Definitions:

Crowdsourcing

A process where a task, problem, or project is solved and completed through contributions from a large group of people, particularly from an online community, rather than from traditional employees or suppliers.

Perpetual Betas

Refers to software or systems that are continuously updated and improved upon, never considered to be in a final or complete state.

Network Effects

The phenomenon where the value or utility of a product or service increases as more people use it, often seen in social media platforms and online marketplaces.

Reputation Economies

Systems where the value is assigned based on the reputation of users, often found in online platforms where contributions are judged by community feedback.