An electrical heating element emits radiation with a peak wavelength of 611 nm (red light).
Determine its temperature using Wein's Law.
Express your answer in Kelvins.
An electrical heating element emits radiation with a peak wavelength of 611 nm (red light). Determine...
An isolated atom of a certain element emits light of wavelength 512 nm when the atom falls from its fifth excited state into its second excited state. The atom emits a photon of wavelength 411 nm when it drops from its sixth excited state into its second excited state. Find the wavelength of the light radiated when the atom makes a transition from its sixth to its fifth excited state. An isolated atom of a certain element emits light of...
Part A If an LED emits light of wavelength 1 = 660 nm , what is the energy gap (in eV) between valence and conduction bands? Express your answer using three significant figures. AC * O O ? Submit Request Answer
28. A red laser pointer emits light with a wavelength of 650 nm. a. What is the frequency of this light? b. What is the energy of 1 mole of these photons? 29. What are all the possible values for I and my when n=3?
An LED emits red light at a wavelength of 670 nm. In one second, the LED uses 8.0 J of energy to emit photons. How many photons does the LED emit in one second? 2.7*10^19 photons 2.7x10^28 photons 3.0x10^19 photons 2.4x10^18 photons
A particular laser emits 675.1 nm light. Assume light of this wavelength is due to a transition of an electron in a box from its n 2 state to its n = 1 state. Find the length of the box. 1.357 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. nm
A star has a surface temperature of 4,211 K. What is peak wavelength in nm of the light it emits? Give the answer to two significant figures. Use scientific notation, with one digit to the left and one digit to the right of the decimal point.
A distant galaxy emits light that has a wavelength of 702.8 nm. On earth, the wavelength of this light is measured to be 704.2 nm. (a) Decide whether this galaxy is approaching or receding from the earth. (b) Find the speed of the galaxy relative to the earth. (Give your answer to 4 significant digits. Use 2.998 x 108 m/s as the speed of light.) (a) The galaxy is receding from the earth. (b) Number _______ Units m/s
A source emits monochromatic light of wavelength 495 nm in air. When the light passes through a liquid, its wavelength reduces to 434 nm What is the liquid's index of refraction? a) 1.49 b) 2.03 c) 1.14 d) 1.26 e) 1.33
Two light bulbs are placed side by side. The first light bulb emits red light of wavelength 700 nm, and the second light bulb emits violet light of wavelength 400 nm. Your eye receives light of the same intensity from both the red light bulb and the violet light bulb. Which of the following statements is correct? Explain your reasoning. (i) Your eye receives the same number of photons per second from both bulbs. (ii) Your eye receives more photons...
a helium-neon laser emits light with a wavelength 633 nm. Calculate its energy