An optical fiber is 1.0 meter long and has a diameter of 20 ?m. Its ends are perpendicular to its axis. Its index of refraction is 1.30
What is the maximum number of reflections a light ray entering one end will make before it emerges from the other end? A)
84,000
B)
42,000
C)
26,000
D)
24,000
E)
18,000
B
You might also like to view...
The ice point and the steam point of water are commonly called the ______________ point and the ______________ point, respectively
Fill in the blank(s) with correct word
Two wave pulses with equal positive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the same time
A) constructive interference occurs. B) destructive interference occurs. C) a standing wave is produced. D) a traveling wave is produced. E) a wave pulse is produced.
The energy attributed to an object by virtue of its motion is known as
A) kinetic energy. B) potential energy. C) radiative energy. D) mass-energy.
An automobile engine takes in 4000 J of heat and performs 1100 J of mechanical work in each cycle. (a) Calculate the engine's efficiency. (b) How much heat is "wasted" in each cycle?
What will be an ideal response?