Question

Луч света переходит из воды в воздух. Угол падения равен 30°. Определите угол преломления.

Answer 1

я думаю 40 градусов, но я не очень уверен

Answer 2

Calculating the Angle of Refraction

When light passes from one medium to another, such as from water to air, the angle of refraction can be calculated using Snell's Law. Snell's Law states that the ratio of the sines of the angles of incidence and refraction is equivalent to the ratio of the velocities of light in the two media. The formula for Snell's Law is:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Where: - n₁ and n₂ are the refractive indices of the two media - θ₁ is the angle of incidence - θ₂ is the angle of refraction

Given that the angle of incidence (θ₁) is 30° and the refractive index of water is approximately 1.33 and air is approximately 1.00, we can calculate the angle of refraction using Snell's Law.

Using the formula: n₁ * sin(θ₁) = n₂ * sin(θ₂)

We can substitute the values: 1.33 * sin(30°) = 1.00 * sin(θ₂)

Solving for θ₂: sin(θ₂) = (1.33 / 1.00) * sin(30°) θ₂ = arcsin(1.33 / 1.00 * sin(30°))

Calculating the value: θ₂ ≈ 22.6°

Therefore, the angle of refraction when light passes from water to air at an angle of incidence of 30° is approximately 22.6°.