(Multiple Choice: 10 Problems, 2 points/problem) 1. Imagine that four sinusoidal

Question

(Multiple Choice: 10 Problems, 2 points/problem) 1. Imagine that four sinusoidal waves shown below are passing each other. Find a pair (or pairs) of the waves to make a destructive interference (two waves cancel each other). 2. A sinusoidal standing sound wave is formed inside a tube that is closed at both ends. Draw the possible standing waves in your rationale. The standing wave is formed when the tube length is equal to a. an odd integer number of half-wavelength. b. an integer number of half-wavelength. c. an odd-integer number of wavelength. d. an integer number of wavelength e. none of the above. lit interference experiment discussed in the class. What happens to the 3. Consider a two-sl distance between adjacent bright spots in the interference pattern on the screen if (a) the wavelength of the light decreases;( a. increases; decreases b. increases; stays the same. c. both increase. d. both decreases. e. decreases; stays the same. d. decreases; increases

Explanation / Answer

1)Paairs of (a and b ) and (c and d) forms destructive interference.

When we combine a and b at each point the sum will be zero.

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