A professor shipwrecked on Hooligan's Island decides to build a telescope from his eyeglasses and some coconut shells. Fortunately, the professor's eyes require different prescriptions, with the left lens having a power of 4.9 diopters and the right lens having a power of 1.7 diopters.
A) Which lens should he use as the objective?
B) What is the absolute value of angular magnification of the professor's telescope? Thanks in advance!