COLLEGE PHYSICS W/MODIF MAST FOR SSC >
2nd Edition
ISBN: 9781323390719
Author: Knight
Publisher: PEARSON C
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Chapter 29, Problem 69GP
To determine
Minimum intensity of the laser beam during each pulse.
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The wavelength of light in the visible region is about 390 nm for violet colour, about 550 nm (average wavelength) for yellowgreen colour and about 760 nm for red colour. (a) What are the energies of photons in (eV) at the (i) violet end, (ii) average wavelength, yellow-green colour, and (iii) red end of the visible spectrum? (Take h = 6.63×10-34 J s and 1 eV = 1.6×10-19 J.)
The Sun emits light at many wavelengths across the Visible and Non-Visible Spectra, but the maximum Intensity wavelength it emits is at 499.7 nm. Does a photon of light at this wavelength have enough Energy to eject an electron from Sodium (Work Function = 2.28 eV) and give it enough Energy to move through a Potential Difference of 1 Volt?
Under favorable conditions, the human eye can detect 1.0×10^(-18) J of electromagnetic energy. How many 600 nm photons would this represent?
Chapter 29 Solutions
COLLEGE PHYSICS W/MODIF MAST FOR SSC >
Ch. 29 - Prob. 1CQCh. 29 - Prob. 2CQCh. 29 - Prob. 3CQCh. 29 - Prob. 4CQCh. 29 - Prob. 5CQCh. 29 - Prob. 6CQCh. 29 - Prob. 7CQCh. 29 - Prob. 8CQCh. 29 - Prob. 9CQCh. 29 - Prob. 10CQ
Ch. 29 - Prob. 11CQCh. 29 - Prob. 12CQCh. 29 - Prob. 13CQCh. 29 - Prob. 14CQCh. 29 - Prob. 15CQCh. 29 - Prob. 16CQCh. 29 - Prob. 17CQCh. 29 - Prob. 18CQCh. 29 - Prob. 20CQCh. 29 - Prob. 21CQCh. 29 - Prob. 22CQCh. 29 - Prob. 23CQCh. 29 - Prob. 24CQCh. 29 - Prob. 25CQCh. 29 - Prob. 27MCQCh. 29 - Prob. 28MCQCh. 29 - Prob. 29MCQCh. 29 - Prob. 30MCQCh. 29 - Prob. 31MCQCh. 29 - Prob. 32MCQCh. 29 - Prob. 1PCh. 29 - Prob. 2PCh. 29 - Prob. 3PCh. 29 - Prob. 4PCh. 29 - Prob. 5PCh. 29 - Prob. 6PCh. 29 - Prob. 7PCh. 29 - Prob. 8PCh. 29 - Prob. 9PCh. 29 - Prob. 10PCh. 29 - Prob. 11PCh. 29 - Prob. 12PCh. 29 - Prob. 13PCh. 29 - Prob. 14PCh. 29 - Prob. 15PCh. 29 - Prob. 16PCh. 29 - Prob. 17PCh. 29 - Prob. 18PCh. 29 - Prob. 19PCh. 29 - Prob. 20PCh. 29 - Prob. 21PCh. 29 - Prob. 22PCh. 29 - Prob. 23PCh. 29 - Prob. 24PCh. 29 - Prob. 25PCh. 29 - Prob. 27PCh. 29 - Prob. 28PCh. 29 - Prob. 29PCh. 29 - Prob. 30PCh. 29 - Prob. 31PCh. 29 - Prob. 32PCh. 29 - Prob. 33PCh. 29 - Prob. 34PCh. 29 - Prob. 35PCh. 29 - Prob. 36PCh. 29 - Prob. 37PCh. 29 - Prob. 39PCh. 29 - Prob. 40PCh. 29 - Prob. 41PCh. 29 - Prob. 42PCh. 29 - Prob. 43PCh. 29 - Prob. 45PCh. 29 - Prob. 46PCh. 29 - Prob. 47PCh. 29 - Prob. 48PCh. 29 - Prob. 49PCh. 29 - Prob. 50PCh. 29 - Prob. 51PCh. 29 - Prob. 52GPCh. 29 - Prob. 53GPCh. 29 - Prob. 54GPCh. 29 - Prob. 55GPCh. 29 - Prob. 56GPCh. 29 - Prob. 57GPCh. 29 - Prob. 58GPCh. 29 - Prob. 59GPCh. 29 - Prob. 60GPCh. 29 - Prob. 61GPCh. 29 - Prob. 62GPCh. 29 - Prob. 63GPCh. 29 - Prob. 64GPCh. 29 - Prob. 65GPCh. 29 - Prob. 66GPCh. 29 - Prob. 67GPCh. 29 - Prob. 69GPCh. 29 - Prob. 70MSPPCh. 29 - Prob. 71MSPPCh. 29 - Prob. 72MSPPCh. 29 - Prob. 73MSPPCh. 29 - Prob. 74MSPPCh. 29 - Prob. 75MSPPCh. 29 - Prob. 77MSPP
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- A collection of atoms has 20% of the sample in a state 7.60 eV above the ground state. If these emit coherent radiation, what is the wavelength of the laser light produced in nanometers? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ∙ s, 1 eV = 1.60 × 10-19 J) Give your answer as a whole number.arrow_forwardA visible (red) emission spectral line for cadmium (Cd) occurs at wavelength λ = 655.980 nm. What is the magnitude of the energy change associated with the emission of exactly three moles of photons of light with this wavelength?arrow_forwardThe kinetic energy of an electron taken from a metal having a work function W = 1.36 eV with photon of wavelength 520 nm is equal to. A. 12 eV B. 0.146 eV C. 1.2 eV D. 0.46 eV E. 1.02 eVarrow_forward
- Under favorable conditions, the human eye can detect 1.0 x 10^(-18) J of electromagnetic energy. How many 600 nm photons would this represent?arrow_forwardWhat is the minimum wavelength in m of the x-ray photons from a 140 kV x-ray tube? (h = 6.63x10-34J·s, 1 eV = 1.6x10-19 J, c = 3.0x108 m/s) Select one: a. 8.9e-12 m b. 4.5e-39 m c. 8.9e-9 m d. 1.1e11 marrow_forwardWhat is the minimum wavelength in m of the x-ray photons from a 140 kV x-ray tube? (h = 6.63x10-34J·s, 1 eV = 1.6x10-19 J, c = 3.0x108 m/sarrow_forward
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- 1. An atom or molecule in the ground state of energy E1 can absorb a photon of energy hv and go the higher energy state E2, then the process is known as option : a. Stimulated absorption b. Spontaneous absorption c. Stimulated emission d. Stimulated radiation 2. Below are the techniques that usually used to measure optical losses in waveguides, except: a. Surface Plasmon b. Scattered light Measurement using Prism Coupler C. Sliding-Prism Method d. Cutback Method e. Fabry-Perot Resonances 3. What is the procedure in Top-down fabrication method? option : a. Powder -> Bulk-> Nanoparticles b. Nanoparticles -> Bulk -> Powder C.Bulk -> Powder -> Nanoparticles d. Nanoparticles -> Powder -> Bulkarrow_forwardAn AM radio station broadcasts an electromagnetic wave with a frequency of 876 kHz, whereas an FM station broadcasts an electromagnetic wave with a frequency of 97.8 MHz. How many AM photons are needed to have a total energy equal to that of one FM photon?arrow_forwardDerive an expression for the ratio of X-ray photon frequency for two elements with atomic numbers Z1 and Z2.arrow_forward
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