On the Moon’s surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. What percent correction is needed to account for the delay in time due to the slowing of light in Earth’s atmosphere? Assume the distance to the Moon is precisely
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- 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.arrow_forwardHow many more minutes would it take light from the sun to reach Earth if the space between them were filled with water rather than a vacuum? The sun is 1.5 ✕ 108 km from Earth.arrow_forwardUV rays with a wavelength (in a vacuum) of 366.0 nm are passed into a medium with a refractive index of n = 1.65. What is the frequency of the rays within this medium? (Units: Hz)arrow_forward
- Light of wavelength 710 nm in vacuum passes through a piece of quartz of refractive index of 1.458. (a) Find the speed of light in quartz. (b) What is the wavelength of this light in quartz? Group of answer choices 6.02 x 108 m/s, 189 n m 2.06 x 108 m/s, 800 n m 2.06 x 108 m/s, 487 n m 2.06 x 108 m/s, 870 n marrow_forwardWhat is the speed of light traveling from air to a medium of refractive index n=1.5? (Speed of light in vacuum is 3.0 × 108 m/s) O 2.0 × 108 m/s. X O 1.5 × 108 m/s. O 3.0 × 108 m/s. O 0.67 × 108 m/s. O 0.75 × 108 m/s. X Carrow_forwardQ. 29 : Light travels through a glass slab of thickness t and refractive index u. IF c is the velocity of light, then the time taken by light to travel the thickness of glass slab is tc (a) (b) (c) (d) tucarrow_forward
- The index of refraction of a glass rod is 1.48 at T = 20.0°C and varies linearly with temperature, with a coefficient of 2.50 x 10-5C⁰-1. The coefficient of linear expansion of the glass is 5.00 x 10-6C⁰-1. At 20.0 °C the length of the rod is 2.80 cm. A Michelson interferometer has this glass rod in one arm, and the rod is being heated so that its temperature increases at a rate of 5.00 C°/min. The light source has wavelength λ = 569 nm, and the rod initially is at T = 20.0°C. Part A How many fringes cross the field of view each minute? ΔΝ = Submit ΤΙ ΑΣΦ Request Answer < Return to Assignment Provide Feedback ? fringes/minutearrow_forwardRefractive Index (n) is a ratio of the speed of light in a vacuum to the speed of light in materials such as glass, water, plastic, etc. Using Snell's Law, and given an air to glass interface with and angle of incidence of 15 degrees, what will be the angle of refractance R if the refractive index of the glass is 1.5 ? Snell's Law: n; (sin I) = n, (sin R) So, Sin R = n; (sin I) / n And, R = arcsin (n; (sin I) / n,) For each angle I, find angle R: 5. I=0, R = 6. I=45, R = 7. I= 60, R = 8. I = 75, R = = arcsin (1(.259)/1.5) = arcsin (.172) = 9.9 degrees Wavelength in Air- Light- Angle of Light -Wavelength in Glass Normal 90° R Air nj-1 Glassarrow_forwardThe intensity of light I through a lake at a depth of x meters is given by the following formula. dI/dx = (-2.31)I a.) At what depth is the intensity of the light half that of the intensity at the surface, I00? b.) At 5 meters deep, what is the intensity of the light as a fraction of I0? c.) How many meters deep will the intensity of light be 1 percent of the intensity of the light at the surface? Remember that the depth at the surface is x = 0.arrow_forward
- Unpolarized light passes through two ideal polarizers. The axis of the first is vertical, and the axis of the second is at 70° to the vertical. What fraction of the incident light is transmitted through both polarizers? 0.342 0.171 0.0585 0.117arrow_forwardThe speed of light in a vacuum (and to a very good approximation in air also) is 3.0 x108 m/s. Light slows down when it enters transparent materials. What is the speed of light in a material with refractive index 1.35? V= m/s Note: you can enter your answer in exponential notation using "E": 1.23 x108 is entered as 1.23E8. What index of refraction corresponds to a speed of light in matter of 1.76 x108 m/s? n =arrow_forwardHow long (in ns) does it take light to travel 1.00 m in water (n = 1.33)? (You will need to look up the speed of light in a vacuum.)arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
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