Explanation Given data: Depth of the pool is 1.5 m. Distance of the person to the entered point of the beam is 5.0 m. Formula used: Write the expression for Snell’s law. n air sin θ air = n water sin θ water (1) Here, n air is the refractive index of air and has the standard value of 1.00, n water is the refractive index of water and has the standard value of 1.33, θ air is the angle made by the light ray with respect to the normal, and θ water is the angle of refraction in the water. Draw the diagram as shown in Figure 1. From figure 1, Write the expression of tan θ for a right angled triangle by using trigonometric rule. tan θ = d h d = h ( tan θ ) (2) Substitute 1.00 for n air , 90 ° for sin θ air and 1.33 for n water in equation (1), 1

College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Chapter 18, Problem 55GP

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Distance from the person to the beam’s strike position.

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Chapter 18, Problem 54GP

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A man in a boat is looking straight down at a fish in the water (n = 1.333) directly beneath him. The fish is looking straight up at the man. They are equidistant from the air/water interface. To the man, the fish appears to be 2.3 m beneath his eyes. To the fish, how far above its eyes does the man appear to be?

After a long day of driving you take a late-night swim in a motel swimming pool. When you go to your room, you realize that you have lost your room key in the pool. You borrow a powerful flashlight and walk around the pool, shining the light into it. The light shines on the key, which is lying on the bottom of the pool, when the flashlight is held 1.2 m above the water surface and is directed at the surface a horizontal distance of 1.5 m from the edge. Part A If the water here is 4.0 m deep, how far is the key from the edge of the pool? Express your answer in meters. 5 ΑΣΦ Submit Request Answer ? m <-1.5m ↑ 1.2 m 4.0 m

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Chapter 18 Solutions

College Physics: A Strategic Approach (3rd Edition)

Ch. 18 - Prob. 1CQ Ch. 18 - Prob. 2CQ Ch. 18 - Can you see the rays from the sun on a clear day?...Ch. 18 - If you take a walk on a summer night along a dark,...Ch. 18 - You are looking at the image of a pencil in a...Ch. 18 - Prob. 6CQ Ch. 18 - In Manets A Bar at the Folies-Bergere (see Figure...Ch. 18 - Explain why ambulances have the word AMBULANCE...Ch. 18 - a. Consider one point on an object near a lens....Ch. 18 - When you look at your reflection in the bowl of a...

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Distance from the person to the beam’s strike position.

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