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 5896 Å is used, what should be the maximum distance of the jeep from the observer if the two head lights are

Question

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 5896 Å is used, what should be the maximum distance of the jeep from the observer if the two head lights are just separated?

Quantrex Academy · Accepted Answer

Correct answer: C. 3.33 ~km

Distance of jeep, x= D d 1.22 D= diameter of lens, d= separation between sources. or x= (2 10⁻³ ) 1.2 1.22 5896 10⁻¹⁰ ~m or x=3336 ~m or x=3.33 ~km .

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 5896 Å is used, what should be the maximum distance of the jeep from the observer if the two head lights are just separated?

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