TAILIEUCHUNG - physics_test_bank_split_37

Tham khảo tài liệu 'physics_test_bank_split_37', khoa học tự nhiên, vật lý phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Simpo PDF Merge and Split Unregistered Version - http Chapter 36 DIFFRACTION 1. Sound differs from light in that sound A. is not subject to diffraction B. is a torsional wave rather than a longitudinal wave C. does not require energy for its origin D. is a longitudinal wave rather than a transverse wave E. is always monochromatic ans D 2. Radio waves are readily diffracted around buildings whereas light waves are negligibly diffracted around buildings. This is because radio waves A. are plane polarized B. have much longer wavelengths than light waves C. have much shorter wavelengths than light waves D. are nearly monochromatic single frequency E. are amplitude modulated AM . ans B 3. Diffraction plays an important role in which of the following phenomena A. The sun appears as a disk rather than a point to the naked eye B. Light is bent as it passes through a glass prism C. A cheerleader yells through a megaphone D. A farsighted person uses eyeglasses of positive focal length E. A thin soap film exhibits colors when illuminated with white light ans C 4. The rainbow seen after a rain shower is caused by A. diffraction B. interference C. refraction D. polarization E. absorption ans C 5. When a highly coherent beam of light is directed against a very fine wire the shadow formed behind it is not just that of a single wire but rather looks like the shadow of several parallel wires. The explanation of this involves A. refraction B. diffraction C. reflection D. the Doppler effect E. an optical illusion ans B Chapter 36 DIFFRACTION 541 Simpo PDF Merge and Split Unregistered Version - http 6. When the atmosphere is not quite clear one may sometimes see colored circles concentric with the Sun or the Moon. These are generally not more than a few diameters of the Sun or Moon and invariably the innermost ring is blue. The explanation for this phenomena involves A. reflection B. refraction C. interference D. diffraction E. the Doppler effect ans

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