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Students are experimenting with waves in a ripple tank. They generate straight waves which move from left to right and hit a barrier with a single slit in it that is approximately the size of one wavelength. The students make observations about the waves to the RIGHT of the slit.

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Which of the following observations are most consistent with the scenario illustrated below? Select TWO answers.


The waves produce a pattern with lines of nodes and antinodes.


The waves spread out and fill some of the area behind the barriers.


The wavelength decreases because some of the energy is blocked by the barriers.


A circular wave is produced by the waves that come through the slit.

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