A Thin Uniform Film of Oil That Can Be Varied

question 75

Multiple Choice

A thin uniform film of oil that can be varied in thickness covers a sheet of glass of refractive index 1.52. The refractive index of the oil is 1.64. Light of wavelength 555 nm is shone from air at normal
Incidence on the film. Starting with no oil on the glass, you gradually increase the thickness of the
Oil film until the first interference maximum in the reflected light occurs. What is the thickness of
The oil film at that instant?

• A) 91.3 nm
• B) 169 nm
• C) 84.6 nm
• D) 139 nm
• E) 183 nm

---

Definitions:

Qualified Retirement

A retirement plan that meets requirements set forth by the IRS that allows for tax benefits for the employer and employee.

Strict Tax Regulations

Rigorous laws and rules governing the assessment and collection of taxes from individuals and businesses.

Favorable Tax Treatment

Favorable Tax Treatment involves tax policies that are advantageous to businesses or individuals, reducing the amount of taxes owed.

Weight Watchers

A company offering various products and services to assist with weight loss and maintenance.