The distance between the eyepiece and the objective lens in a certain compound microscope is 21.5 cm. The focal length of the eyepiece is 2.40 cm and that of the objective is 0.425 cm. What is the overall magnification of the microscope

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.