What is the magnificanon of an optical instrument whose objective lens has a focal length of 82 cm, and whose eyepiece has a focal length of 28 cm? What is the overall length of the telescope when adjusted for a relaxed eye?​

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers