Use the following information to answer numerical-response question 5 Fibre-optic cables are used to transmit digital data at high speeds over long distances cables are bundles of plastic-coated strands that have glass cores. The index of refractin this glass is 1.60. The plastic coating is called cladding. The index of refraction of this plastic is 1.52. EMR can travel long distances in the glass cores because of the phenom of total internal reflection.

cables are bundles of p plastic is 1.52. EMR can travel long distances in the guilty this glass is 1.60. The plastic of total internal reflection. Fibre-optic Cable Plastic cladding Glass core Light Note: This diagram is not drawn to scale. Numerical Response 5. The critical angle at the glass core-plastic cladding boundary is (Record your three-digit answer in the numerical-response section on the answer sheet.) Use the following information to answer question 22. A light bulb that is 15.0 cm tall is placed 75.0 cm from a converging lens that has a focal length of 50.0 cm. The orientation of the focused image produced is i and the measured height of the image would be ii The statement above is completed by the information in row Row i ii A. erect 7.5 cm B. erect 30.0 cm C. inverted 7.5 cm inverted 30.0 cm