The speed of light in a certain material is measured to be 2.2 × 108 m/s. What is the index of refraction of this material? (c = 3.0 × 108 m/s)
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- The speed (V) of light in any transparent material is less than the speed of light c in a vacuum: V (any transparent material) = c /n, c = 3 x 10 8 m/s, n = index of refraction of a transparent material What is the speed of light in alcohol? nalcohol = 1.36Light passes from air into ice with part of the ray reflected and part refracted. The reflected and refracted rays are at 90° with each other. What is the velocity of light in ice? 2.11 X 108 m/s 2.01 X 108 m/s 1.94 X 108 m/s 1.73 X 108 m/sA beam of light traveling in air strikes a slab of transparent material. The incident beam makes an angle of 60° with the normal, and the refracted beam make an angle of 50° with the normal. What is the speed of light in the transparent material? (c = 3.0 × 108 m/s) Provide the answer: x 108 m/s
- Ex. 16: The speed of light in air is 3 × 108 m/s and that in diamond is 1.4 × 108 m/s. Find R. I. of diamond.The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, vz/vi, is а. 1.99 b. 1.07 с. 0.932 d. 0.511 e. 0.760QUESTION 14 When certain light rays pass from a vacuum into a block of an unknown material, the measured index of refraction of the material is 1.59 What is the speed of light inside the block? 2.9 x 10° m/s 4.8 x 10 m/s 9.9 x 106 m/s 1.9 x 10° m/s 1.0 x 10° m/s
- A child sees a coin apparently 24 cm from the top surface of a plastic plate. The coin is actually under the rectangular plate 30 cm thick. What is the velocity of light in plastic plate? 1.2 x 108 m/s 0.3 x 108 m/s 2.4 x 108 m/s 3.5 x 108 m/sA ray of light traveling in water is incident on an interface with a flat piece of glass. The wavelength of the light in the water is 726 nm, and its wavelength in the glass is 544 nm. If the ray in water makes an angle of 56.0 with respect to the normal to the interface, what angle does the refracted ray in the glass make with respect to the normal?The speed of light in a vacuum is 3 x 108 m/s. What is the ratio of its speed in water (n = 1.33) to its speed in a vacuum? Enter your answer as a percentage
- The wavelength of light is 5000 A. Find the wave number. (a) 0 5x 10 (b) 3x 10° (c) 2x10 (d) 1x 10°A ray of light is incident on the surface of a block of flint glass at an angle of 32.0° with respect to the normal (a line perpendicular to the surface at the spot where the ray hits the block). A fraction of the light is reflected and the rest refracted. What is the angle (in degrees) between the reflected and refracted rays?Light passes from air into ice with part of the ray reflected and part refracted. The reflected and refracted rays are at 90° with each other. What is the velocity of light in ice? Incident angle = 30 2.11 X 108 m/s 2.01 X 108 m/s 1.94 X 108 m/s 1.73 X 108 m/s