Problem 449. Grandpa's telescope
Two grandkids Dorothy and Benjamin are sharing a telescope made by their grandpa, who used an old lens of spectacles as the objective. This objective lens has power of p diopter. Dorothy definitively watches a doghouse at distance d meters. Benjamin basically watches a birdhouse at distance b meters. After watching the doghouse, how much shift of the eyepiece in mm is necessary to watch the birdhouse? Please give a general solution, the test suite may be more extensive later.
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3 Comments
Christian Schröder
on 6 Jan 2023
This could really benefit from a few more test cases.
Dyuman Joshi
on 7 Jan 2023
Test cases have been added and solutions are rescored.
Christian Schröder
on 7 Jan 2023
Thanks, Dyuman!
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