Question

Version 1 0.) Red light propagates through window glass at a speed of 2.0 x 10 m/s. This means that bli light must propagate through vacuum at a speed of: A) 1.5 x 10 m/s B) 2.0 x 10 m/s C) 2.5 x 10 m/s D) 3.0 x 10 m/s E) No way to know with the information given, but it must be <3.0 x 10 m/s A screen red, yellow, blue glass 7.) Red, yellow, and blue light along the same ray are cident from air onto a glass prism, as shown in the figure, The indices-of-refraction for each color are: Pred = 1.48, Nyellow = 1.52, and blue = 1.56. The colors that appear on the screen, in the order 1, 2, and 3, are: A) blue, yellow, and red B) red, blue, and yellow C) red, yellow, and blue D) yellow, red, and blue E) yellow, blue, and red 8.) You want to use a double-convex (converging) lens havine focal length fto form a magnified and upright image of an ant, i.e.. to make an image of the ant that is both right-side-up and larger than the actual ant. To do this, you must hold the lens so that the ant is at what distances from the lens center? A) O<scf B) s = f cf<s<2fD ) s = 27E ) >2f 9.) Suppose you wanted to set a piece of paper on fire using sunlight and a mirror. Which of the following statements is most accurate? A) It would be best to use a plane mirror B) It would be best to use a convex mirror C) It would be best to use a concave mirror, with the paper at the focal point. D) It would be best to use a concave mirror, with the paper at the center of curvature. E) It is not possible to start a fire using a mirror, since mirrors form only virtual images 10.) Unpolarized light having average intensity of 6.0 W/m is incident on a linear polarizer whose polarization axis is aligned vertical (up-down). The intensity of the transmitted polarized light is: A) 3.0 W/m² B) 6.0 W/m² C) 0.0 W/m2 D ) 4.2 W/m² E) 2.1 W/m2 adcasts radio waves into air at frequencies of 100 MHz and 200 MHz that start from the broadcast tower at the same time. The indices-of-refraction for air are 100 = 1.00018 for 100 MHz and 1200 = 1.00012 for 200 MHz. After a time t = 0.000002 s, which of the following is true? A) The 100 MHz wave has traveled farther than the 200 MHz wave. B) The 200 MHz wave has traveled farther than the 100 MHz wave. C) Both waves have traveled the same distance. D) There is not enough information to tell which wave has traveled farther. E) Both waves have travelled an infinite distance.

Answer 1

6. Speed of light of any colour in any medium is same only frequency and wavelength are different for different colour.

7. The order would be Red, Yellow, Blue. Greater the refractive index greater the deviation.