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Ksivusya [100]
3 years ago
14

Perspex has a greater refractive index than ice. Explain what happens to the speed and direction of a ray of light at it travels

from ice into Perspex. Thanks!
Physics
1 answer:
True [87]3 years ago
8 0

Answer:

when the ray passes from ice to perspex it must approach the normal

Explanation:

This is an exercise in refraction of light, the process is governed by the expression

      n₁ sin θ₁ = n₂ sin θ₂

where we use index 1 for the incident medium and subscript 2 for the scattered medium.

In our case, medium 1 is ice with the lowest refractive index.

           sin θ₁ = n₂ / n₁   sin θ₂

To fulfill this equation, if the ray travels through the medium 1 ice with an angle θ₁, the angle in the medium 2 perspex must be smaller so that the sine is smaller, so when the ray passes from ice to perspex it must approach the normal

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Answer:

See the explanation below

Explanation:

Density is defined as the relationship between mass and volume, i.e. the following equation can be used:

density = m/v

where:

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If we change the volume of a body by reducing its size, its mass will also decrease proportionally with a density as seen in the equation.

m = density*v

To understand this concept more clearly, let's use the following example:

We know that the density of water is equal to 1000 [kg/m^3], that is, 1 cubic meter of water contains 1000 kilograms of water, using the equation.

1000 = m /1

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Now if we have 500 kilograms of water, that would pass with the volume so that the density remains constant.

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v = 500/1000

v = 0.5 [m^3]

We can see that the volume of water has halved. Since the mass of water was reduced by half. That is, the relationship between mass and volume is proportional to the density of the material or substance.

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What is the volume of a cone with a height of 27 cm
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Explanation:

→ Volume of cone = πr² × h/3

Here,

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→ Volume of cone = 169π × 9 cm³

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Answer:

c = 1 / √(ε₀*μ₀)

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