The diagrams present two groups of wavefronts in a ripple tank. A student states two things about the waves. 1. As the waves reflect off the barrier, their direction changes, but the wavelength stays unchanged. 2. As the waves refract on entering the shallow water, their direction stays unchanged, but the wavelength changes. Which statements are correct?
- Astatement 1 and statement 2
- Bstatement 1 only
- Cstatement 2 only
- Dneither statement 1 nor statement 2