Question

Please provide specific explanations for each question. I do not know any materials for these questions, so please teach me specifically and professionally. Thank you a lot. Also, clear handwriting notes are important!

19. A converging lens of focal length 40 cm and a diverging lens of focal length -40 cm are placed 160 cm apart. A 2-cm tall object is 60 cm from the converging lens. Find the location of the final image on the figure. Is it upright or inverted? What is the size of the image? 20. An object is 10cm to the left of a convex mirror with a focal length of -10cm; draw rays 21. You stand a distance of 1.0m from a spherical reflecting ball with a radius of 0.25m. 22. Light is traveling through a medium with n=1.2, refracts at an interface with a second which accurately locate the position of the image. Where is your reflection located? medium for which n-1.4, and then hits an interface with air (n-1). What is the minimum angle θ for the light traveling in the first medium such that there is no transmitted light at the interface with air? (in other words, that there's total internal reflection at that interface) 23. You stand in front of a 2m diameter tank of water and see a crab which appears to you to be 0.4m from the close edge of the tank. Where is the crab actually? For water, n-1.33

Answer 1

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