Total internal reflection occurs when Light is incident on a boundary with a mat

Question

Total internal reflection occurs when

Light is incident on a boundary with a material that has a higher index of refraction than the incident medium

Light is incident on a boundary with a material that has a lower index of refraction than the incident medium

Anytime light crosses a boundary between two different materials

Light is incident on a boundary with a material that has a higher index of refraction than the incident medium

Light is incident on a boundary with a material that has a lower index of refraction than the incident medium

Anytime light crosses a boundary between two different materials

Explanation / Answer

ANS: Light is incident on a boundary with a material that has a higher index of refraction than the incident medium

Total internal reflection, means complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle. In general, total internal reflection takes place at the boundary between two transparent media when a ray of light in a medium of higher index of refraction approaches the other medium at an angle of incidence greater than the critical angle.

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