Physics1410_Chapter_16_practice_questions (1)

10. Of the available choices, the color most energetic. has the shortest wavelength and is the a. Blue b. White c. Red d. Black e. Green 11. Which of the following is not true regarding electrmagnetic energy? a. Electromagnetic energy travels through empty space b. All wavelengths of electromagnetic energy travel at the same speed c. The visible portion of the spectrum ccomprises only a small part of the total range of electromagnetic energy. d. A given wavelength is directly proportional to the energy contained in that wavelength e. The hotter an object, the more energy it emits at all wavelengths 12. Which wavelength contains the most energy? а. 25 um b. .05um c. 1.5μm d. 100um е. .001um 13. The amount of energy as the wavelength a. increases; increases b. decreases; increases c. decreases; decreases 14. The sensation of heat is produced by a. visible light b. x-rays c. radiowaves d. infrared e. ultra-violet in the northern hemisphere and rotate 15. Cyclones rotate in the southern…

a. Violet light has a higher frequency and shorter wavelength than red light. b. Violet light has a lower frequency and shorter wavelength than red light.c. Violet light has a higher frequency and longer wavelength than red light. d. Violet light has a lower frequency and longer wavelength than red light.

16. Light has a frequency of 5.45  1014 hertz [Note: Hz is also s-1]. What is its wavelength? Use the speed of light = 3.00  108 m/s. a. 1.82  106 nm b. 1.82  10-3 nm c. 1.82  105 nm d. 5.50  10-7 nm e. 550 nm

With steps please

Dispersion occurs when:a. some materials bend light more than other materials.b. a material slows down some wavelengths more than others.c. a material changes some frequencies more than others.d. light has different speeds in different materials.

Please answer 1 to 3

1. Which part of the electromagnetic spectrum has a higher frequency than ultraviolet waves? a. infrared b. microwaves c. x-rays d. none of these 2. Which part of the electromagnetic spectrum has a longer wavelength than visible light? a. gamma rays b. radio waves c. ultraviolet waves d. X-rays 3. Which of the given regions of the electromagnetic spectrum are arranged according to decreasing wavelength? a. X-rays, gamma rays, ultraviolet, infrared b. microwaves, infrared, gamma rays, X-rays c. gamma rays, X-rays, microwaves, radio waves d. radio waves, microwaves, X-rays, gamma rays

Answer all. It is easy to answer all. Thanks

35. Identify which list of characteristics is true for the light wave shown in the sketch below. origin λ = 750 nm A. UV light with a frequency of 4.0x10¹4 Hz B. Red light with an amplitude of about 500 nm C. Infrared light with a frequency of 4.0x10¹4 Hz D. Infrared light with a frequency of 2.2x10¹4 Hz E. UV light with cy of 2.2x10¹4 Hz

6.What is the relationship between wavelength and frequency for electromagnetic radiation? A.The wavelength and frequency are directly related to each other. B.The wavelength can be used to determine the frequency, but frequency cannot be used to determine wavelength. C.The wavelength and frequency are equal to each other. D.The wavelength and frequency are inversely related to each other.

Space-based telescopes are needed to observe electromagnetic energy that cannot reach the surface of Earth. The regions of the electromagnetic energy spectrum that do reach Earth’s surface pass through what are referred to as   a. atmospheric windows.   b. atmospheric portals.   c. electromagnetic openings.   d. extreme wavelengths.   e. visible and radio waves.

19. Calculate the frequency of electromagnetic radiation having a wavelength of 60.0 nm. The speed of light is 3.00 x 10³ m/s. a. 5.00 x 106 S¹ b. 5.00 x 10¹5 S-¹ 2.00 x 10-¹6 S-¹ C. d. 200. s¹

If the frequency of an electromagnetic wave is reduced to one third, what happens to the wavelength? A. It decreases by a factor of 9. B. It is also reduced to one third. C. It increases by a factor of 6. D. It triples.

What is the defining characteristic of a perfect blackbody? a. It looks black in ordinary white light.   b. It absorbs all radiation incident on it.   c. The temperature of a glacier increased over time.   d. It has a surface temperature of absolute zero.   e. It has a surface that reflects 50% of light evenly across all frequencies

5.How does a microwave differ from a gamma ray? A.Gamma rays have lower frequencies than microwaves because they have longer wavelengths.   B.Microwaves have lower frequencies than gamma rays because they have shorter wavelengths.   C.Microwaves have lower frequencies than gamma rays because they have longer wavelengths.   D.Gamma rays have lower frequencies than microwaves because they have shorter wavelengths.

2. Radio stations use radio waves to transmit electromagnetic signals. Which of the following best compares radio waves to other waves on the electromagnetic spectrum? A. Radio waves have the highest frequency of all electromagnetic waves. B. Radio waves have the longest wavelength of all electromagnetic waves. C. The frequency of radio waves is close to the frequency of ultraviolet radiation. D. The wavelength of radio waves is close to the wavelength of visible light waves.

Electromagnetic waves in certain wavelength ranges interact with water molecules because the molecules have a large electric dipole moment. The electric field of the waveA. Exerts a net force on the water molecules.B. Exerts a net torque on the water molecules.C. Exerts a net force and a net torque on the water molecules.

10. What is the approximate speed of light (EM radiation)? a. 1 billion feet per second b. 1 million feet per second c. 1000 feet per second d. 186,000 feet per second

5. An EM wave has a frequency of 9.77 x 1014 Hz. What is this wavelength, and how should we classify it in terms of its place in the electromagnetic spectrum? 6. How long does it take light from the moon to reach us? It is 3.8 x 10³ m away.

2. Calculate the wavelength and energy of light that has a frequency of 1.5 x 1015 Hz. 3. The wavelength of green light from a traffic signal is centered at 5.20 x 105 cm. Calculate the frequency. 4. Calculate the frequency of light that has a wavelength of 4.25 x 10-°m. Identify the type of electromagnetic radiation 5. A photon of light has a wavelength of 0.050 cm. Calculate its energy.

1. Which of the following physicist did not theorized the electromagnetic nature oflight? (answer only)a. Heinrich Hertzb. Michael Faradayc. Christiaan Huygensd. James Clerk Maxwell 2.15. What is the frequency of a yellow light if the energy that it can emit is equal to (answer only)3.4 x 10-19 J?a. 2.2 x 10-19 Jb. 3.6 x 10-19 Jc. 4.5 x 10-19 Jd. 5.1 x 10-19 J 3.What happens to the speed of light when it travels from air to glass? (answer only)a. Its speed increasesb. Its speed decreasesc. Its speed remains the samed. Its speed decreases then increases 4. What happens to the speed of light when it travels from air to glass? (answer only)a. Its speed increasesb. Its speed decreasesc. Its speed remains the samed. Its speed decreases then increases

11. Which of the following is not true regarding electrmagnetic energy? a. Electromagnetic energy travels through empty space b. All wavelengths of electromagnetic energy travel at the same speed c. The visible portion of the spectrum ccomprises only a small part of the total range of electromagnetic energy. d. A given wavelength is directly proportional to the energy contained in that wavelength e. The hotter an object, the more energy it emits at all wavelengths 12. Which wavelength contains the most energy? а. 25 um b. .05um с. 1.5um d. 100um e. .001μm 13. The amount of energy as the wavelength a. increases; increases b. decreases; increases c. decreases; decreases

Which of these EM waves has the highest frequency? a. Gamma Rays O b. Microwaves O c. Ultraviolet O d. X-rays