14. What is the root-mean-square value of the voltage? The function is a triangular wave with its peak voltage at ±Vmax and a period of T. (A) (B) (C) (D) (E)

19. A fiber has index of refraction n = 1.15, and its end surface is normal to the direction of its length. Light is incident from the air. What is the maximum incident angle so that the light can have total internal reflection inside the fiber? (A) sin⁻¹(0.57) ≈ 35° (B) sin⁻¹(0.66) ≈ 42° (C) sin⁻¹(0.75) ≈ 49° (D) sin⁻¹(0.80) ≈ 53° (E) sin⁻¹(0.91) ≈ 65°

14. What is the root-mean-square value of the voltage? The function is a triangular wave with its peak voltage at ±Vmax and a period of T.

(A)
(B)
(C)
(D)
(E)

相關試題

相關試卷

14. What is the root-mean-square value of the voltage? The function is a triangular wave with its peak voltage at ±Vmax and a period of T. (A) (B)(C)(D) (E)

相關試題

相關試卷

14. What is the root-mean-square value of the voltage? The function is a triangular wave with its peak voltage at ±Vmax and a period of T.

(A)
(B)
(C)
(D)
(E)