The three smallest non-zero thicknesses of soapy water (n = 1.33) on Plexiglass if it appears yellow (constructively reflecting 589.3-nm light) when illuminated by white light are A. 195.5 nm, 391 nm, 586.5 nm B. 221.5 nm, 443 nm, 664.5 nm C. 391 nm, 782 nm, 1173 nm D. 443 nm, 886 nm, 1329 nm E. None of these. A police car emits an 800 Hz siren. As the car passes a stationary observer on the sidewalk, and is moving away, he perceives the pitch to be 720 Hz. Approximately what pitch did he hear when the car was approaching the observer? Assume the car's velocity remains constant, and that the velocity of sound in air is 340m/s. A. 720 Hz B. 760 Hz C. 800 Hz D. 850 Hz. E. 900 Hz What happens to the diffraction pattern of a single slit when the entire apparatus is immersed in water without altering the configuration? A. The diffraction pattern does not change at all. B. The diffraction pattern becomes less compact. C. The diffraction pattern becomes more compact. D. The diffraction pattern completely disappears. E. None of these.
The three smallest non-zero thicknesses of soapy water (n = 1.33) on Plexiglass if it appears yellow (constructively reflecting 589.3-nm light) when illuminated by white light are A. 195.5 nm, 391 nm, 586.5 nm B. 221.5 nm, 443 nm, 664.5 nm C. 391 nm, 782 nm, 1173 nm D. 443 nm, 886 nm, 1329 nm E. None of these. A police car emits an 800 Hz siren. As the car passes a stationary observer on the sidewalk, and is moving away, he perceives the pitch to be 720 Hz. Approximately what pitch did he hear when the car was approaching the observer? Assume the car's velocity remains constant, and that the velocity of sound in air is 340m/s. A. 720 Hz B. 760 Hz C. 800 Hz D. 850 Hz. E. 900 Hz What happens to the diffraction pattern of a single slit when the entire apparatus is immersed in water without altering the configuration? A. The diffraction pattern does not change at all. B. The diffraction pattern becomes less compact. C. The diffraction pattern becomes more compact. D. The diffraction pattern completely disappears. E. None of these.
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Transcribed Image Text:The three smallest non-zero thicknesses of soapy water (n = 1.33) on Plexiglass if it
appears yellow (constructively reflecting 589.3-nm light) when illuminated by white light are
A. 195.5 nm, 391 nm, 586.5 nm
B. 221.5 nm, 443 nm, 664.5 nm
C. 391 nm, 782 nm, 1173 nm
D. 443 nm, 886 nm, 1329 nm
E. None of these.
A police car emits an 800 Hz siren. As the car passes a stationary observer on the
sidewalk, and is moving away, he perceives the pitch to be 720 Hz. Approximately what pitch did
he hear when the car was approaching the observer? Assume the car's velocity remains constant,
and that the velocity of sound in air is 340m/s.
A. 720 Hz
B. 760 Hz
C. 800 Hz
D. 850 Hz
E. 900 Hz
What happens to the diffraction pattern of a single slit when the entire apparatus is
immersed in water without altering the configuration?
A. The diffraction pattern does not change at all.
B. The diffraction pattern becomes less compact.
C. The diffraction pattern becomes more compact.
D. The diffraction pattern completely disappears.
E. None of these.
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