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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- What happens to a light wave when it travels from air into glass? (a) Its speed remains the same. (b) Its speed increases. (c) Its wavelength increases. (d) Its wavelength remains the same. (e) Its frequency remains the same.Light passes from a material with index of refraction 1.3 into one with index of refraction 1.2. Compared with the incident ray, what happens to the refracted ray? (a) It bends toward the normal. (b) It is undeflected. (c) It bends away from the normal.The index of refraction for water is about 43. What happens as a beam of light travels from air into water? (a) Its speed increases to 43c, and its frequency decreases. (b) Its speed decreases to 34c, and its wavelength decreases by a factor of 34. (c) Its speed decreases to 34c, and its wavelength increases by a factor of 43. (d) Its speed and frequency remain the same. (e) Its speed decreases to 34c, and its frequency increases.
- the speed of light in a material is 0.41 c. what is the critical angle of a light ray ay the interface between the material and a vacuum? i) 22 ii) 17 iii) 19 iv) 24What is the ratio of the speed of light in ethanol (n = 1.361) compared to zircon (n = 1.923)? v1 is velocity of light in the first medium listed, v2 is the velocity of light in the second medium listed. a) v1 = 1.11 v2 b) v1 = 0.903 v2 c) v1 = 1.41 v2 d) v1 = 0.708 v2The 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
- A ray of light is incident on the surface of a block of clear ice at an angle of 41.0° with the normal. Part of the light is reflected, and part is refracted. Find the angle between the reflected and refracted light. nice= 1.309 12.1° 108.9° 139° 71.1°Light travels a distance of 0.80 m in 4.00 ns in a given substance.What is the index of refraction of this substance?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/s
- The speed of light in a certain material is measured to be 2.2 × 108 m/s. A laser beam traveling through the air is pointed perpendicular to this surface. How much is the beam refracted relative to the normal to the surface?Light incident on an unknown material at an angle of 35 degrees. The refracted beam travels .246 meters in 1.23 ns. What is the index of refraction for this unknown material? a) n=3.00 b) n=2.5 c) n=2.0 d) n= 1.5 e) n= .5 f) none of these are correctThe speed of light in an unknown medium is measured to be 2.76 x 10^8 m/s. What is the index of refraction of the medium?