select the correct answer. which condition is necessary for total internal reflection? a. the refracted ray…

select the correct answer. which condition is necessary for total internal reflection? a. the refracted ray should lie along the boundary of the two media. b. the refracted ray should turn toward the normal. c. light in a medium is incident on a boundary with a faster medium. d. light in a medium is incident on a boundary with a slower medium.

select the correct answer. which condition is necessary for total internal reflection? a. the refracted ray should lie along the boundary of the two media. b. the refracted ray should turn toward the normal. c. light in a medium is incident on a boundary with a faster medium. d. light in a medium is incident on a boundary with a slower medium.

Answer

Brief Explanations:

Total internal reflection occurs when light travels from a medium with a higher refractive - index (slower medium) to a medium with a lower refractive - index (faster medium) and the angle of incidence is greater than the critical angle. Option C is correct as it states that light in a medium is incident on a boundary with a faster medium. Option A describes the condition for the critical angle, not total internal reflection itself. Option B is a general refraction property and not related to total internal reflection. Option D is the opposite of the correct condition for total internal reflection.

Answer:

C. Light in a medium is incident on a boundary with a faster medium.