Which beams are due to reflection.

Question

Canvas HW09; Due before class on Wed. 4/20. A small microwave oven is shown below, looking at it from overhead. (The circle in the middle of the 30cm x 50cm oven is where you put your food.) The mechanism that turns the circle is broken; the food does not rotate. The microwaves come from a common source, through two tubes, as shown. The two tubes have the same length. They enter the oven from both sides, 5cm from the back of the ovén. Redraw the main oven (30cm x 50xm) as a rectangle on your solution. Microwave Source 5cm 30cm 50cm A) If the microwaves have a frequency of 1.5 GHz, what is their wavelength? B) Locate one place in the oven where you would expect destructive interference that would leave a cold spot in your food. (Ignore reflection off the walls.) There are many possible solutions, but try to find a simple one where you can precisely calculate the location of the cold spot.

Answer 1

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Chapter 22.2, Problem 22.2QQ

To determine

Which beams are due to reflection.

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Canvas HW09; Due before class on Wed. 4/20. A small microwave oven is shown below, looking at it from overhead. (The circle in the middle of the 30cm x 50cm oven is where you put your food.) The mechanism that turns the circle is broken; the food does not rotate. The microwaves come from a common source, through two tubes, as shown. The two tubes have the same length. They enter the oven from both sides, 5cm from the back of the ovén. Redraw the main oven (30cm x 50xm) as a rectangle on your solution. Microwave Source 5cm 30cm 50cm A) If the microwaves have a frequency of 1.5 GHz, what is their wavelength? B) Locate one place in the oven where you would expect destructive interference that would leave a cold spot in your food. (Ignore reflection off the walls.) There are many possible solutions, but try to find a simple one where you can precisely calculate the location of the cold spot.

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