A Beam of Light in Air Is Incident on the Surface

question 60

Multiple Choice

A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.49) .If the velocity of the beam before it enters the plastic is 3.00 x 10⁸ m/s,what is its velocity inside the block?

• A)3.00 x 10⁸ m/s
• B)1.93 x 10⁸ m/s
• C)2.01 x 10⁸ m/s
• D)1.35 x 10⁸ m/s

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Definitions:

Total Variance

The difference between the actual costs incurred and the standard costs, summarizing all variances in cost accounting to analyze overall performance.

Direct Labor Quantity Variance

This refers to the difference between the actual labor hours worked and the standard labor hours that should have been worked for the actual level of production, multiplied by the standard hourly wage rate.

Direct Labor Cost

The expense incurred by a company for wages, benefits, and other costs for employees who work directly on the manufacturing of products.

Produced

Refers to the quantity of goods or services created by a company during a specific time period.