General Science • PhysicsMedium
What is the critical angle of incidence in an optically denser medium when the angle of refraction in the rarer medium becomes exactly 90 degrees?
A. The angle at which total internal reflection ceases
B. The threshold angle for total internal reflection✓ Correct Answer
C. The angle of minimum deviation
D. Brewster's angle
💡 Solution & Explanation
The critical angle is defined as the angle of incidence in a denser medium that produces an angle of refraction equal to 90 degrees in the rarer medium. Exceeding this threshold angle results in total internal reflection where light bounds back completely. Optical phenomena like total internal reflection explain the working of fiber optic communication cables.
More General Science Physics questions
- How does the resonant frequency of an alternating current RLC series circuit change if the inductance and the…
- Which temperature scale has its zero point at absolute zero and uses the same magnitude for its degree…
- What is the name of the device used to measure the depth of the ocean using ultrasonic waves?
- What happens to the electrical resistance of a pure semiconductor when its temperature is increased?
- What name is given to the apparent change in frequency or wavelength of a wave in relation to an observer who…