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The wave nature of light is described by the equation c = λ·ν, which relates the speed of light (c, meters per second, m·s-1) to the wavelength (λ, lambda, meters, m) and the frequency (ν, nu, Hertz, Hz, s-1); because the speed of light is a constant in a given medium, wavelength and frequency are inversely proportional. 3.
Wave Nature of Light - Numerical Problems Questions with Answers, Solution. EXAMPLE Q. The wavelength of light from sodium source in vacuum is 5893Å.What are its (a) wavelength, (b) speed and (c) frequency when this light travels in water which has a refractive index of 1.33. Solution. The refractive index of vacuum, n 1 = 1. The wavelength in ...
Calculate the mean wavelength of the laser light and compare it with the accepted value of 635 nm. Assess the percentage uncertainty in this result.
a. white light yellow b. green and red light yellow c. blue light black 21. Wave Properties of Light The speed of red light is slower in air and water than in a vacuum. The frequency, however, does not change when red light enters water. Does the wavelength change? If so, how? Yes, because v!!f and !! v/f,when v decreases, so does !. 22.
26. A ray of light of frequency 5×1014 Hz is passed through a liquid. The wavelength of light measured inside the liquid to be 450nm. Calculate (i) wave length of light in vacuum. (ii) refractive index of liquid (iii) velocity of light in the liquid. Take velocity fo light in vacuum as 3×108-ms 1.
More Practice: Energy, Frequency, Wavelength and the Photoelectric Effect. There are two equations you should know: E = h! and c =!!" !=!!!!!∴!!!=!!! E = energy (J) = wavelength (m) ! = frequency (Hz or s-1) h = Planck’s constant, 6.626x10-34 J∙s c = the speed of light in a vacuum, 3.00 × 108 m∙s-1
The symbol for the speed of light in a vacuum (or air) is "c". We will use the symbol "v" for the speed of light in any other substance C The frequency of the waves in both mediums remains the same. C The speed changes as the waves moves from one medium to another. Hence, if the frequence remains the same, the wavelength must change .
