Question 7 (1 point) Saved Light travelling in one material enters another material in which it travels faster. The light wave will: O A) increase in frequency O B) increase in wavelength O C) decrease in frequency O D) decrease in wavelength O E) travel through the new material inverted Question 8 (1 point) Saved A wave diffracts as it travels through an opening in a barrier. Which of the following variables can be altered to change the amount of diffraction the wave experiences? I. distance between the source of the waves and the barrier Il. amplitude Ill. frequency IV. wavelength V. slit width O A) I and II O B) 11, III, and IV O C) 1, III, and IV O D) III, IV, and V O E) I and IV