1. The sound from an approaching train whistle will be shif

1. The sound from an approaching train whistle will be shifted in… 1. The sound from an approaching train whistle will be shifted in frequency compared to its frequency at rest.  The shift will be towards:Group of answer choices the direction of the shift cannot be determined without knowing the exact speedNo answer text provided.lower frequencyhigher frequency 2. Optical fibers work because ofGroup of answer choices total internal reflection.diffraction.diffuse reflection.polarization.interference. 3. Chromatic aberration is a greater problem for which optical device?Group of answer choices lensboth lenses and mirrors equallymirrorNo answer text provided. 4. A prism refracts different colors of light by different amounts.  This is due to:Group of answer choices diffraction.polarization.dispersion.specular reflection.interference. 5. If light passes from a medium with a lower index of refraction to a medium with a higher index of refraction, the light bends: Group of answer choices more information is neededNo answer text provided.towards the normalaway from the normal 6. According to the law of reflection, a light ray striking a mirror at an angle of incidence of 30 degrees will leaves the mirror at an angle ofGroup of answer choices 30 degrees.none of the above.less than 30 degrees.60 degrees. 7. When light passes through two or more narrow slits, an alternating dark and bright pattern is observed on a screen because ofGroup of answer choices diffuse reflection.polarization.diffraction.specular reflection.interference. 8. Rank the following media in order according to the speed of light in them, from slowest to fastest: vacuum, air, water and glass.Group of answer choices water, glass, air, vacuumnone of the aboveair, water, glass, vacuumglass, water, air, vacuumglass, air, water, vacuum 9. Light spreads out when it passes through a narrow slit because ofGroup of answer choices diffraction.polarization.diffuse reflection.interference.specular reflection. 10. In nearsightedness (myopia), light from distant objects is refracted:Group of answer choices too much before reaching the retinajust the right amount before reaching the retinaNo answer text provided.too little before reaching the retina Engineering & Technology Electrical Engineering PHYS 102

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