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Chapter 6: Problem 15

Label each of the following statements as true or false. For those that are false, correct the statement. (a) Visible light is a form of electromagnetic radiation. (b) Ultraviolet light has longer wavelengths than visible light. (c) \(X\) rays travel faster than microwaves. (d) Electromagnetic radiation and sound waves travel at the same speed.

Short Answer

Expert verified
(a) True. Visible light is a form of electromagnetic radiation. (b) False. Ultraviolet light has shorter wavelengths than visible light. (c) False. All forms of electromagnetic radiation, including X rays and microwaves, travel at the speed of light in a vacuum (\(3 \times 10^8 m/s\)). (d) False. Electromagnetic radiation travels at the speed of light, which is approximately \(3 \times 10^8 m/s\) in a vacuum. Sound waves travel much slower, typically at a speed of \(343 m/s\) in the air at room temperature.

Step by step solution

01

(a) Analyzing the statement about visible light

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. We need to verify if the statement is true or false.
02

(a) Answer

The statement is true. Visible light is indeed a form of electromagnetic radiation.
03

(b) Analyzing the statement about ultraviolet light

Ultraviolet (UV) light is the portion of the electromagnetic spectrum just beyond the visible light range, with wavelengths shorter than visible light. The statement claims that UV light has longer wavelengths than visible light. Let's check if the statement is true or false.
04

(b) Answer

The statement is false. Ultraviolet light has shorter wavelengths than visible light.
05

(c) Analyzing the statement about \(X\) rays and microwaves

X rays and microwaves are both forms of electromagnetic radiation. X rays have shorter wavelengths and higher frequencies than microwaves. The statement claims that X rays travel faster than microwaves. We need to verify if this statement is true or false.
06

(c) Answer

The statement is false. All forms of electromagnetic radiation, including X rays and microwaves, travel at the speed of light in a vacuum (\(3 \times 10^8 m/s\)).
07

(d) Analyzing the statement about electromagnetic radiation and sound waves

Electromagnetic radiation (EM) and sound waves are two different types of waves. EM waves are transverse waves and can propagate without a medium, while sound waves are longitudinal waves and need a medium to travel. The statement claims that both of these waves travel at the same speed. We need to verify if the statement is true or false.
08

(d) Answer

The statement is false. Electromagnetic radiation travels at the speed of light, which is approximately \(3 \times 10^8 m/s\) in a vacuum. Sound waves travel much slower, typically at a speed of \(343 m/s\) in the air at room temperature.

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Most popular questions from this chapter

Arrange the following kinds of electromagnetic radiation in order of increasing wavelength: infrared, green light, red light, radio waves, X rays, ultraviolet light.

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