numerical answers only no working needed!

1)

Classify statements about total internal reflection as true or false. @ Macmillan Learning True False Answer Bank Total internal reflection is more efficient than simple reflection of light off a silvered mirror, so prisms are often used in optical instruments to minimize light loss. When light hits a boundary at an angle greater than the critical angle, it will undergo total internal reflection. Magnifying glasses are a practical application of the phenomenon of total internal reflection. A larger critical angle means that total internal reflection is more likely to occur.For the optical fiber shown in the figure, find the minimum angle of incidence (0;) that will result in total internal reflection if the refractive index for the cladding (n2) is 1.40 and the refractive index of the core is (A.) m = 1.55 and (B.) m = 1.78. @ Macmillan Learning Cone of acceptance Core Cladding (n,) O A. 0; 2 B. 0;2Light rays in a material with index of refrection 1.39 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence. Find the second material's index of refraction n when the required critical angle is 73.7. n =Inn The index of refraction for a certain type of glass is 1.643 for blue light and 1.603 for red light. A beam of white light (one that contains all colors) enters a plate of glass from the air, 113,-, m l, at an incidence angle of 36.05\". What is the absolute value of 5. the angle in the glass between blue and red parts of the refracted beams? LI;- Macmillan Learnin an The index of refraction of silicate int glass for red light is 1.620 and for violet light is 1.660. A beam of white light in this glass strikes the glassair interface at a 29.70\" angle of incidence and refracts out into the air. What is the angular separation between the red and violet components of the spectrum that emerges from the glass? E Macmillan Learnin