Questions
Focal lengths of the objective and eye piece of an astronomical telescope are 50 cm and 5 cm respectively. The least distance of distinct vision is 25 cm. The telescope is focussed on a distant star for distinct vision. The separation between and eye piece will be
detailed solution
Correct option is B
For the eye piece, 1(−25)−1(−uc)=1+5⇒uc=4.17 cm∴ Separation between objective and eyepiece =V0+uc=(50+4.17)cm =54.17 cmTalk to our academic expert!
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