An experiment is set up, as shown below, to investigate the effect of slit width on the degree of diffraction. Distance y on the diagram represents the distance between the screen and the single slit. Distance x on the diagram represents the width of the central bright band.
7.1 Write down an investigative question for this experiment. (2)
7.2 State Huygens’ principle in words. (2)
7.3 How will distance x be affected if the slit width is increased? Choose from INCREASE, DECREASE or REMAIN THE SAME. (1)
7.4 Explain the answer to QUESTION 7.3. (2)
7.5 How will distance x be affected if distance y is increased? Choose from INCREASE, DECREASE or REMAIN THE SAME. (1)
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