Total Internal Reflection

Q. If the angle of incidence is 70° in a medium with a refractive index of 1.6, will total internal reflection occur when it hits air?
  • A. Yes
  • B. No
  • C. Only if the angle is less than 90°
  • D. Not enough information
Q. If the angle of incidence is 70° in glass (n=1.5), will total internal reflection occur when light travels to air?
  • A. Yes
  • B. No
  • C. Only if the angle of refraction is 30°
  • D. Only if the angle of refraction is 45°
Q. If the angle of incidence is equal to the critical angle, what is the angle of refraction?
  • A.
  • B. 45°
  • C. 90°
  • D. It cannot be determined.
Q. If the angle of incidence is equal to the critical angle, what is the behavior of the light ray?
  • A. It is refracted at 90°.
  • B. It is totally internally reflected.
  • C. It is absorbed.
  • D. It is transmitted.
Q. If the critical angle for a certain material is 30°, what is the refractive index of that material?
  • A. 1.00
  • B. 1.15
  • C. 1.73
  • D. 2.00
Q. If the critical angle for a certain material is 45°, what is the refractive index of that material?
  • A. 1.41
  • B. 1.00
  • C. 1.73
  • D. 0.71
Q. If the refractive index of a medium is 1.33, what is the critical angle for total internal reflection?
  • A. 48.6°
  • B. 60.0°
  • C. 30.0°
  • D. 45.0°
Q. If the refractive index of a medium is 1.33, what is the maximum angle of incidence for total internal reflection when light travels to air?
  • A. 41.8°
  • B. 48.6°
  • C. 53.1°
  • D. 60.0°
Q. If the refractive index of a medium is 1.5, what is the maximum angle of incidence for total internal reflection when light travels to air?
  • A. 41.8°
  • B. 48.6°
  • C. 60.0°
  • D. 90.0°
Q. If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection when light travels from this medium to air?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection at the interface with air?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is 2.0, what is the maximum angle of incidence for total internal reflection when light travels to air?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of diamond is 2.42, what is the critical angle for total internal reflection when light travels from diamond to air?
  • A. 24.4°
  • B. 30.0°
  • C. 36.9°
  • D. 41.8°
Q. In a total internal reflection scenario, if the angle of incidence is 45° and the refractive index of the medium is 1.5, what is the angle of refraction?
  • A. 45°
  • B. 30°
  • C. 60°
  • D. Total internal reflection occurs
Q. In optical fibers, total internal reflection is utilized. What is the primary reason for this?
  • A. To increase the speed of light.
  • B. To minimize loss of light.
  • C. To change the color of light.
  • D. To focus light.
Q. In which of the following scenarios will total internal reflection NOT occur?
  • A. Light traveling from diamond to air
  • B. Light traveling from water to air
  • C. Light traveling from air to glass
  • D. Light traveling from glass to air
Q. In which of the following scenarios will total internal reflection occur?
  • A. Light from air to water
  • B. Light from glass to air
  • C. Light from water to glass
  • D. Light from air to glass
Q. In which of the following scenarios would total internal reflection NOT occur?
  • A. Light traveling from diamond to air.
  • B. Light traveling from water to air.
  • C. Light traveling from air to glass.
  • D. Light traveling from glass to water.
Q. In which scenario would total internal reflection NOT occur?
  • A. Light traveling from glass to air at a steep angle.
  • B. Light traveling from water to air at a shallow angle.
  • C. Light traveling from diamond to air at a high angle.
  • D. Light traveling from air to water at any angle.
Q. What happens to the light ray when it hits the boundary at an angle greater than the critical angle?
  • A. It is refracted
  • B. It is absorbed
  • C. It is reflected back into the denser medium
  • D. It passes into the rarer medium
Q. What happens to the light ray when it hits the boundary at the critical angle?
  • A. It is refracted into the second medium.
  • B. It is reflected back into the first medium.
  • C. It travels along the boundary.
  • D. It is absorbed.
Q. What is the effect of increasing the angle of incidence beyond the critical angle?
  • A. Increased refraction
  • B. Decreased reflection
  • C. Total internal reflection
  • D. No effect
Q. What is the effect of increasing the angle of incidence beyond the critical angle in total internal reflection?
  • A. Increased intensity of reflected light
  • B. Decreased intensity of reflected light
  • C. No effect on intensity
  • D. Light is transmitted into the second medium
Q. What is the refractive index of a medium if the critical angle for total internal reflection is 30° when light travels to air?
  • A. 1.73
  • B. 1.00
  • C. 1.41
  • D. 1.50
Q. What is the refractive index of a medium if the critical angle for total internal reflection is 30°?
  • A. 1.00
  • B. 1.15
  • C. 1.73
  • D. 2.00
Q. What is the relationship between the angle of incidence and the angle of reflection in total internal reflection?
  • A. They are equal
  • B. They are complementary
  • C. They are supplementary
  • D. There is no relationship
Q. Which of the following conditions is necessary for total internal reflection to occur?
  • A. Light must travel from a denser to a rarer medium
  • B. Light must travel from a rarer to a denser medium
  • C. The angle of incidence must be less than the critical angle
  • D. The angle of incidence must be equal to the critical angle
Q. Which of the following conditions must be satisfied for total internal reflection to occur?
  • A. Light must travel from a denser to a rarer medium.
  • B. Light must travel from a rarer to a denser medium.
  • C. The angle of incidence must be less than the critical angle.
  • D. The angle of incidence must be equal to the critical angle.
Q. Which of the following is a practical application of total internal reflection?
  • A. Lenses in glasses.
  • B. Mirrors in telescopes.
  • C. Fiber optic communication.
  • D. Convex lenses.
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