Two Flat Glass Plates Are in Contact Along One End

question 56

Multiple Choice

Two flat glass plates are in contact along one end and are separated by a sheet of paper 3.3 × 10−⁶ m thick at the other end.The top plate is illuminated by a monochromatic light source of wavelength 514 nm.How many dark parallel bands will be evident across the top plate? (1 nm = 10−⁹ m)

• A)7
• B)11
• C)6
• D)13
• E)9

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Definitions:

Margin Error

An expression of the amount of random sampling error in a survey's results, which describes the range within which the true value lies with a certain level of confidence.

Margin Error

The maximum expected difference between the true population parameter and a sample estimate of that parameter.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter, often expressed in terms of a percentage indicating the degree of confidence.

Random Sampling Errors

Variability in sample statistics from sample to sample due to the method of choosing a random subset of the population.