What Is Refraction of Light

question 118

Multiple Choice

What is refraction of light?

• A) breaking of white light into its composite colors
• B) change in direction of a light ray when it reflects on a material more dense than the one in which it is traveling
• C) absorption of light as it traverses a dense, transparent material
• D) change in direction of a light ray as it passes at an angle from one transparent material to another that has a different optical density

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Definitions:

Direct Labour Hours

The total time workers spend producing a product or service, which directly correlates to the production.

Labour Efficiency Variance

A metric that assesses the difference between the expected amount of labor time to produce a given level of output and the actual labor time used.

Labour Rate Variance

The difference between the actual wage rate paid to workers and the expected (or standard) wage rate, multiplied by the actual hours worked.

Direct Labour Costs

Costs that can be directly attributed to the production of goods or services, such as wages for workers manufacturing a product.