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The intensity pattern shown is observed on a distant

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Unformatted text preview: he inductorthe inductor branch by one-fourth E. in the capacitor branch lags branch lags the current in branch by one-fourth of a cycle. of a cycle. ans: B ans: B Feedback Clicker Chapter 36: DIFFRACTION 554 55. Monochromatic light is normally incident on a di raction grating. The mth order line is at a di raction angle and has width w. A wide single slit is now placed in front of the grating and its width is then slowly reduced. As a result: A. both and w increase B. both and w decrease C. remains the same and w increases D. remains the same and w decreases E. decreases and w increases ans: C rms value  ofrms ac current is: bcurrent is: 64. The an value raph est represents the pulses as func6on •Which g of an ac its peak A. its peak value value of 6 average its average value B. its me: value that steady that steady current that produces theof heating in a resistor as the actual the actua C. current that produces the same rate same rate of heating in a resistor as current current that steady current that current that a battery atathe same at the same actual current D. that steady will charge will charge battery rate as the rate as the actual current zero E. zero ans: C ans: C 54. A person with her eye relaxed looks through a di raction grating at a distant monochromatic point source of light. The slits of the grating are vertical. She sees: A. one point of light B. a hazy horizontal strip of light of the same color as the source C. a hazy strip of light varying from violet to red D. a sequence of horizontal points of light E. a sequence of closely spaced vertical lines ans: D 53. Light of wavelength is normally incident on some plane optical device. The intensity pattern shown is observed on a distant screen ( is the angle measured from the normal of the device). The device could be: 1 0 1 2 3 0 2 1 3 2 intensity . . . . . .. .. .. ....... . .. . .. .. .. .. . . .. . .. .. .. .. . . .. .. .. .. . . .. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. . . .. . . . . .. . . .. . . .. . .. . . . .. .. . . . . . .. .......................................................... . .......... .... ... . . ......... ......... .. ........... .. . ... ... . ........................................ .............. (W/ ) sin 3 a single slit of width W a single slit of width 2W two narrow slits with separation W two narrow slits with separation 2W a di raction grating with slit separation W ans: A a single slit of width W a single slit of width 2W two narrow slits with separation W two narrow slits with separation 2W a di raction grating with slit separation W ans: A A. B. C...
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This document was uploaded on 02/13/2014.

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