Total internal reflection occurs only when light travels from a higher-index medium toward a lower-index medium.

Here's the step-by-step explanation:

1. When light travels from a medium with a higher refractive index (n1) to a medium with a lower refractive index (n2), the light ray bends away from the normal.

2. As the angle of incidence in the higher-index medium increases, the angle of refraction in the lower-index medium also increases, until it reaches 90 degrees. This is called the critical angle.

3. If the angle of incidence is greater than the critical angle, the light does not refract into the second medium at all. Instead, it is completely reflected back into the first medium. This phenomenon is known as total internal reflection.

So, total internal reflection can only occur when light is trying to move from a medium with a higher refractive index to one with a lower refractive index.

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Total internal reflection occurs only when light travels from a higher-index medium toward a lower-index medium.

Here's the step-by-step explanation:

1. When light travels from a medium with a higher refractive index (n1) to a medium with a lower refractive index (n2), the light ray bends away from the normal.

2. As the angle of incidence in the higher-index medium increases, the angle of refraction in the lower-index medium also increases, until it reaches 90 degrees. This is called the critical angle.

3. If the angle of incidence is greater than the critical angle, the light does not refract into the second medium at all. Instead, it is completely reflected back into the first medium. This phenomenon is known as total internal reflection.

So, total internal reflection can only occur when light is trying to move from a medium with a higher refractive index to one with a lower refractive index.

Knowee AI · Accepted Answer

Total internal reflection occurs only when light travels from a higher-index medium toward a lower-index medium.

Here's the step-by-step explanation:

1. When light travels from a medium with a higher refractive index (n1) to a medium with a lower refractive index (n2), the light ray bends away from the normal.

2. As the angle of incidence in the higher-index medium increases, the angle of refraction in the lower-index medium also increases, until it reaches 90 degrees. This is called the critical angle.

3. If the angle of incidence is greater than the critical angle, the light does not refract into the second medium at all. Instead, it is completely reflected back into the first medium. This phenomenon is known as total internal reflection.

So, total internal reflection can only occur when light is trying to move from a medium with a higher refractive index to one with a lower refractive index.

Total internal reflection occurs only when light travels from Group of answer choicesa lower-index medium toward a higher-index medium.a higher-index medium toward a lower-index medium.

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