Please answer the questions in full sentences and show the steps and formulas well. Explain each answer well. Thank you!

AL 1. What do you think will happen if you change the width of a slit but keep the wavelength fixed? 2. What do you think will happen if you change the wavelength of a wave but keep the width of the slit fixed? 3. When does diffraction become more noticeable? 4. Explain the difference between the diffractions observed. * =0.5 cm A - 9.5cm Mig = 2 em 58.5 cm (b) 5. Why do lower frequency sounds diffract more than higher frequency sounds? 6. If a marching band is approaching on a cross street, which instrument will you hear first, a high pitched piccolo or a low pitched bass drum? 7. Bats use echolocation to detect and locate their prey - insects. Why do they use ultrasonic vibrations for echolocation rather than audible sound?A 2 1. What happens to an interference pattern when the frequency increases? 2. What happens when the distance between the sources increases? 3. What happens when the relative phase of the two sources changes