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# Physics: Refractive Index and Light Rays

Created by
@UnselfishAmetrine

Speed of light

Vacuum

### How is the refractive index defined in terms of the speed of light in different media?

$\frac{v_1}{v_2}$

### Which medium has a refractive index closer to that of vacuum?

<p>Air</p> Signup and view all the answers

### What does the refractive index ratio symbol n21 represent?

<p>Refractive index of medium 2 with respect to medium 1</p> Signup and view all the answers

### What would happen to the refractive index if the speed of light in medium 2 decreased?

<p>It would increase</p> Signup and view all the answers

### How is the ability of a medium to refract light expressed?

<p>Refractive index</p> Signup and view all the answers

### What does optical density refer to?

<p>Ability to refract light</p> Signup and view all the answers

### In which type of medium does light travel faster?

<p>Rarer medium</p> Signup and view all the answers

### What is the relationship between refractive index and optical density?

<p>Directly proportional</p> Signup and view all the answers

### Which type of medium bends light towards the normal?

<p>Optically denser medium</p> Signup and view all the answers

### What property distinguishes an optically denser medium?

<p>Larger refractive index</p> Signup and view all the answers

### What is the equation for the refractive index of medium 1 with respect to medium 2?

<p>n21 = v1/v2</p> Signup and view all the answers

### What does the absolute refractive index of a medium represent?

<p>The ratio of the speed of light in air to the speed of light in the medium</p> Signup and view all the answers

### What is the refractive index of water based on the information provided?

<p>1.33</p> Signup and view all the answers

### How is the refractive index of medium nm defined?

<p>nm = c/v</p> Signup and view all the answers

### Which equation represents the refractive index of medium 2 with respect to vacuum?

<p>$n_2 = v/c$</p> Signup and view all the answers

### What does the refractive index of crown glass represent?

<p>$n_g = 1.52$</p> Signup and view all the answers

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