**Question 3:**Electromagnetic radiation is used in many forms of communication. Electromagnetic waves with relatively long wavelengths are often used to transmit signals because these waves travel easily around objects. Which type of electromagnetic radiation is best for transmitting signals around objects?**Options:**- **A.** Gamma rays- **B.** Radio waves- **C.** Ultraviolet rays- **D.** X-rays*Explanation:*The above question pertains to the types of electromagnetic radiation used for communication purposes. One of the crucial factors in determining the effectiveness of electromagnetic waves for signal transmission around objects is the wavelength of the waves. Waves with longer wavelengths tend to be more effective at traveling around objects, making them optimal for communication.

Electromagnetic radiations are radiations carried by photons having certain frequencies and…

Answered: 3. Electromagnetic radiation is used in…

Similar questions

Upon refraction, the property of an EM wave that does not change is the A. both period & frequency B. frequency C. wavelength D. period E. speed
5. A laser blackboard pointer delivers 0.10-mW average power in a beam 0.90 mm in diameter. Be sure to include units. A. Find the average intensity. B. Find the peak electric field. C. Find the peak magnetic field.
7. For each law listed below, chose the correct physical description of that law from the choices listed. Put the letter of your choice in the corresponding box (or just list out your choices in order on your exam). LAW LETTER CHOICE a. Lorentz Force Law, F= qE + qö xB b. Gauss' Law: Qin O E dA = c. Gauss's Law for Magnetism: B dA =0 d. Faraday's Law: E· ds dt е. Ampere-Mаxwell Law: B. ds = Hol + EgHo" dt Letter Physical Meaning of Law A Circulating magnetic fields are created by electric currents and by changing electric fields. Diverging magnetic fields do not exist; There are no isolated magnetic poles. B An electric force is exerted on a charged particle in an electric field. A magnetic force is exerted on a charged particle moving in a magnetic field. Diverging electric fields are created by charged particles. D E Circulating electric fields are created by changing magnetic fields.
Problem 5. Assume that electromagnetic propagation through space is what we have been calling "free space." b) How long does it take to communicate with electromagnetic waves from Mars to Earth? Another way of asking this question is how long does it take for an electromagnetic signal originating on Mars to reach Earth? c) for two humans separated by 6 feet, how long does it take for the light reflected off of one person to be seen by the other person?
5. Which of the following quantities is the same for all photons in a vacuum? A. speed B. frequency C. energy D. wavelength
Write the name of the appropriate electromagnetic wave from Longest to shortest wave. Use the word bank. Word Bank for EM Waves: X-ray, Visible, Ultraviolet, Radio, Microwave, Infrared, Gamma Types of Radiation wwww Which type of waves have the most energy? Radio waves Microwaves All have the same energy. Gamma rays Light waves
893. An electron moving in a circle at high speed generates a polarized electromagnetic wave called synchrotron radiation. Which of the following gives all possible orientations of the magnetic field, for any synchrotron radiation produced by the electron below? A. a only B. b only C. c and b only D. a, b, and c k b AC a A. a only B. b only C. c and b only D. a, b, and c b 894. Which of the following gives possible directions of propagation for any synchrotron radiation produced by the electron in the previous question?