Question
An electromagnetic wave traveling through a vacuum has a wavelength of $1.5 \times 10^{-1}$ meter. What is the period of this electromagnetic wave?(A) $5.0 \times 10^{-10} \mathrm{~s}$(B) $1.5 \times 10^{-1} \mathrm{~s}$(C) $4.5 \times 10^{7} \mathrm{~s}$(D) $2.0 \times 10^{9} \mathrm{~s}$
Step 1
The period is the reciprocal of the frequency, and the frequency is the speed of light (c) divided by the wavelength. Therefore, we can write the period as: \[T = \frac{1}{f} = \frac{\lambda}{c}\] Show more…
Show all steps
Your feedback will help us improve your experience
Keshav Singh and 71 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
What is the wavelength of X-rays with a frequency of $1.5 \times 10^{18}$ hertz traveling in a vacuum? (A) $4.5 \times 10^{26} \mathrm{~m}$ (B) $2.0 \times 10^{-10} \mathrm{~m}$ (C) $5.0 \times 10^{-10} \mathrm{~m}$ (D) $5.0 \times 10^{9} \mathrm{~m}$
If the frequency of a light wave in a vacuum is $5.1 \times 10^{14}$ hertz, what is its wavelength? (A) $5.9 \times 10^{-7} \mathrm{~m}$ (B) $1.7 \times 10^{-7} \mathrm{~m}$ (C) $1.5 \times 10^{-7} \mathrm{~m}$ (D) $8.1 \times 10^{-7} \mathrm{~m}$
The frequency of electromagnetic wave having wavelength $25 \mathrm{~mm}$ is $\quad \mathrm{Hz}$ (A) $1.2 \times \overline{10^{10}}$ (B) $7.5 \times 10^{5}$ (C) $1.2 \times 10^{8}$ (D) $7.5 \times 10^{6}$
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD