Light of Wavelength 6

question 80

Multiple Choice

Light of wavelength 6.9 × 10−⁷ m has an energy of: (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s)

• A)2.9E-19 J
• B)9.6E-20 J
• C)3.1E-19 J
• D)4.3E-20 J
• E)​3.2E-20 J

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Definitions:

Air Conditioning System

A mechanism designed for controlling the temperature, humidity, and overall air quality in an enclosed space.

Expansion Valve

Restricts the flow of the refrigerant in an A/C circuit, which lowers its pressure as it exits the valve.

High-Pressure

Refers to a condition or system operating at a pressure significantly above atmospheric pressure, often used in hydraulic and pneumatic applications.

Low-Pressure

Refers to a condition or an area where the pressure is lower than the surrounding atmosphere or in comparison to a specified reference.