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Which of the following statements is true? I. The energy within a microwave oven is not...

Which of the following statements is true? I. The energy within a microwave oven is not a form of electromagnetic radiation II. Infrared light has higher energy than visible light III. The speed of any kind of electromagnetic radiation through vacuum depends on its wavelength Question 4 options: A) I only B) II only C) III only D) All of I, II, and III E) None of I, II, and III

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Answer #1

A microwave oven uses microwave radiation (type of electromagnetic radiation) as an energy source. Hence I) statment is false.

The speed of any kind of electromagnetic radiation through vacuum dose not depends on its wavelength. Hence II) statment is false.

Visible light region on the spectrum scale is: 400nm to 700nm (E~1.24eV). Whereas, IR region is 1mm to 1000nm (Far to near IR; E~12.4 to 124 meV). Hence, IR light has lower energy than visible light.

Thus all three statments are false. (Answer is E)None of I, II, and III)

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