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Unformatted text preview: as shown. The box must contain: 25. Light from a point source X contains only blue and red components. After passing through a mysterious box, the light falls on a screen. Bright red and blue hands are observed as shown. The box must contain: screen X ... . .... .. ... .... ........................... . . ..... ........................... .. .... •. .. . ... . a) a lens b) a mirror A. a lens c) a prism B. a mirror d) a double slit C. a prism D. a double slit e) a bluea andand red filter red filter E. blue 16 ans: D mysterious box red & blue blue red blue A. B. C. D. E. 0.090 mm 0.012 mm 0.014 mm Feedback 0.024 mm 0.062 mm Light from a point source X contains only blue and red components. AYer passing through a mysterious box, the light falls on a screen. ans: D Bright red and blue hands are observed as shown. The box must contain: 25. Light from a point source X contains only blue and red components. After passing through a mysterious box, the light falls on a screen. Bright red and blue hands are observed as shown. The box must contain: screen X ... . .... .. ... .... ........................... . . ..... ........................... .. .... •. .. . ... . a) a lens b) a mirror A. a lens c) a prism B. a mirror d) a double slit C. a prism D. a double slit e) a bluea andand red filter red filter E. blue 17 ans: D mysterious box red & blue blue red blue One of the two slits in a Young’s experiment is painted over so that it transmits only one- half the intensity of the other slit. As a result: r2 d y1 r1 R a) the fringe system disappears b) the bright fringes get brighter and the dark ones get darker c) the fringes just get dimmer d) the dark fringes just get brighter e) the dark fringes get brighter and the bright ones get darker 18 One of the two slits in a Young’s experiment is painted over so that it transmits only one- half the intensity of the other slit. As a result: r2 d y1 r1 R a) the fringe system disappears b) the bright fringes get brighter and the dark ones get darker c) the fringes just get dimmer d) the dark fringes just get brighter e) the dark fringes get brighter and the bright ones get darker 19...
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This document was uploaded on 02/13/2014.

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