COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 26, Problem 20QAP
To determine
Which option is correct, the color of light emitted by a hot object depends on
A. the size of the object.
B. the shape of the object.
C. the material from which the object is made.
D. the temperature of the object.
E. the color of the object when it is cold.
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Students have asked these similar questions
• Photodiode is used in the detection of
A. visible light,
B. invisible light,
C. no light,
D.
both visible and invisible light.
• A. Dimmer
B. Brighter
• C. Neither dimmer nor brighter
1) When light is travelling, as in the diffraction example above, it is mostly useful to describe it as a wave. Like water waves or sound waves, different “rays” of light will interact with each other depending on their path length and phase. We call this process:
a. constructive and destructive interference.
b. reflection.
c. black-body radiation.
e. absorption.
f. diffusion.
2. The black-body emission of an object tells us its:
a. electric charge.
b. single wavelength emitted.
c. temperature.
d. quantum state.
e. element composition
3. Spectroscopy is interested in emission and absorption lines, because ...
a. they sound really pretty.
b.they are only emitted by intelligent life.
c. electric currents always emit certain sound waves.
d. they are pretty.
e. they correspond to specific electron transitions characteristic to certain elements (and certain ions and molecules).
Chapter 26 Solutions
COLLEGE PHYSICS
Ch. 26 - Prob. 1QAPCh. 26 - Prob. 2QAPCh. 26 - Prob. 3QAPCh. 26 - Prob. 4QAPCh. 26 - Prob. 5QAPCh. 26 - Prob. 6QAPCh. 26 - Prob. 7QAPCh. 26 - Prob. 8QAPCh. 26 - Prob. 9QAPCh. 26 - Prob. 10QAP
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- A device that analyzes light by spreading it out according to wavelength is called a(n) a. interferometer. b. camera. c. photometer. d. spectrograph.arrow_forward•if A=(3u3 - 2u2) I + 5 cos uj-4 sin uk dA find @ d'A duz duarrow_forwardWhat happens to the length of an object as its velocity approaches the speed of light? A. The object appears to shorten. B. The object's length does not change to an outside observer. C. The object's apparent length is not affected by high speeds. D. The object appears to lengthen.arrow_forward
- 3. How much energy, in joules, does it take to raise a gallon of room temperature water, ~21.1°C, to boiling? Some useful values: kg gal Pwater = 3.79- J g°C Cw=4.18- 4. Consider the gallon of water from the scenario in the previous question. If we use a 600 square centimeter magnifying glass to focus the sun's light on the water, how long will it take to raise the water to boiling? Ignore any heat lost by the water during the process. Some useful values: The radiant power of the sun at noon on the Earth's equator is about 1,370 watts per square meter. That is 1,370 joules of energy every second over every square meter of the Earth near the equator.arrow_forward2.What is the speed of light in water (1=1.33) and in glass (1=1.5)? 3.What is the longest wavelength EM radiation that can eject a photoelectron from silver (A=4.73 eV; 1 eV = 1.6x10-19 J).arrow_forward1. The refractive index of seawater is 1.345. What is the angle of refraction when light is incident at an angle of 30.00 ? A. 30 degrees B. 37.4 degrees C.45 degrees D. 21.8 degrees If a photon has an energy of 8.6 * 10-19 J, which region of the electromagnetic spectrum does it fall into? A. Infrared B. Visible region C. Ultraviolet region D. Near infraredarrow_forward
- 5. When light goes from one material into another material having a higher index of refraction, A. its speed decreases but its wavelength and frequency both increase. B. its speed and wavelength decrease, but its frequency stays the same. C. its speed, wavelength, and frequency all decrease. D. its speed increases, its wavelength decreases, and its frequency stays the same. E. its speed decreases but its frequency and wavelength stay the same.arrow_forwardState following statements whether TRUE or FALSE. i. We can see ordinary solid objects because light is refracted from them. ii. At room temperature the thermal radiation are in infrared region of the spectrum. iii. Our eyes are sensitive to ultraviolet light. iv. Upon heating, objects begin to emit visible light. Temperature of a piece of metal is increases; first it glow with deep red color and then it turns to yellow. V.arrow_forwardWhich requires a physical medium in which to travel—light, sound, or both? Explain.arrow_forward
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