Question

Луч света переходит из стекла в воздух определить абсолютный показатель преломления стекла и угол падения луча если угол преломления равен 49 а скорость света в стекле равна 200000 км/с

Answer 1

N=c/v (n-абсолютный показатель преломления
c- скорость света =3*10^8 м/с)
n=3*10^8/2*10^8=1,5
В- угол преломления,который нам дан 49
sinA/sinB=n
отсюда sinA=sinB*n
sinA=49*1,5=73,5

Answer 2

Calculation of Absolute Refractive Index and Angle of Incidence

To determine the absolute refractive index of the glass and the angle of incidence, we can use the formula for Snell's law:

n₁sin(θ₁) = n₂sin(θ₂)

Where: - n₁ is the refractive index of the medium the light is coming from (in this case, air/vacuum) - θ₁ is the angle of incidence - n₂ is the refractive index of the medium the light is entering (in this case, glass) - θ₂ is the angle of refraction

Given: - Angle of refraction (θ₂) = 49 degrees - Speed of light in glass (v₂) = 200,000 km/s

We need to find: - Absolute refractive index of the glass (n₂) - Angle of incidence (θ₁)

To find the absolute refractive index of the glass (n₂), we can rearrange Snell's law as follows:

n₂ = (n₁sin(θ₁)) / sin(θ₂)

To find the angle of incidence (θ₁), we can rearrange Snell's law as follows:

θ₁ = arcsin((n₂sin(θ₂)) / n₁)

Let's calculate the values using the given information.

Using the given speed of light in glass (v₂ = 200,000 km/s), we can calculate the refractive index of the glass (n₂) using the formula:

n₂ = c / v₂

Where: - c is the speed of light in a vacuum (approximately 299,792 km/s)

Substituting the values, we get:

n₂ = 299,792 km/s / 200,000 km/s

Calculating this, we find:

n₂ ≈ 1.499

Now, let's calculate the angle of incidence (θ₁) using the formula:

θ₁ = arcsin((n₂sin(θ₂)) / n₁)

Substituting the values, we get:

θ₁ = arcsin((1.499 * sin(49°)) / 1)

Calculating this, we find:

θ₁ ≈ 30°

Therefore, the absolute refractive index of the glass is approximately 1.499, and the angle of incidence is approximately 30 degrees.

Please note that the calculations provided are based on the given information and assumptions.