question_answer

The head lights of a jeep are 1.2 m apart. If the pupil of the eye of an observer has a diameter of 2 mm and light of wavelength \[\text{5896}\overset{\text{o}}{\mathop{\text{A}}}\,\] is used, what should be the maximum distance (in km) of the jeep from the observer if the two head lights are just separated?

Answer:

3.39