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AP® Physics 1 & 2

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Diffraction Lab Water Waves

APPH12-QRK3NL

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.

A

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

B

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

C

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

D

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