Question

На горизонтальному дні водойми, що має глибину 1,6 м, лежить плоске дзеркало. Світловий промінь падає на поверхню води, відбивається від дзеркала і виходить у повітря. Відстань від місця входження променя до місця його виходу 1.5 м. Визначити кут падіння променя. Вважати, що показник заломлення води відносно повітря 1,33

Answer 1

Ответ:

Объяснение: подивіться на фото там все є від а до я

Answer 2

Problem Analysis

We are given that there is a flat mirror lying on the horizontal bottom of a body of water with a depth of 1.6 m. A light ray enters the water, reflects off the mirror, and exits into the air. The distance from the entry point of the ray to the exit point is 1.5 m. We need to determine the angle of incidence of the ray.

Solution

To solve this problem, we can use the law of reflection and Snell's law of refraction.

1. Law of Reflection: - The angle of incidence is equal to the angle of reflection. - Let's denote the angle of incidence as θ.

2. Snell's Law of Refraction: - Snell's law relates the angles of incidence and refraction to the refractive indices of the two media. - The refractive index of water with respect to air is 1.33. - The refractive index of air with respect to water is the reciprocal of 1.33, which is approximately 0.75. - Snell's law can be written as: n1 * sin(θ1) = n2 * sin(θ2), where n1 and n2 are the refractive indices of the two media, and θ1 and θ2 are the angles of incidence and refraction, respectively.

3. Applying Snell's Law: - In this case, the light ray travels from water (n1 = 1.33) to air (n2 = 0.75). - We know the distance from the entry point to the exit point is 1.5 m. - Let's denote the angle of refraction as θ2. - Using Snell's law, we can write: 1.33 * sin(θ) = 0.75 * sin(θ2).

4. Applying the Law of Reflection: - Since the light ray reflects off the mirror, the angle of incidence is equal to the angle of reflection. - Therefore, θ = θ2.

5. Solving the Equations: - We can substitute θ for θ2 in the equation from Snell's law: 1.33 * sin(θ) = 0.75 * sin(θ). - Simplifying the equation, we get: 1.33 * sin(θ) = 0.75 * sin(θ). - Dividing both sides of the equation by sin(θ), we get: 1.33 = 0.75. - This equation is not possible, as it implies that 1.33 is equal to 0.75, which is not true.

Conclusion

Based on the given information, it is not possible to determine the angle of incidence of the light ray. The equations derived from the laws of reflection and refraction lead to a contradiction, indicating that the given scenario is not physically possible.