JEE Main 2018 — Heights and Distances Question with Solution
JEE Main 2018 (15 Apr Shift 1 Online)
Question
An aeroplane flying at a constant speed, parallel to the horizontal ground, above it, is observed at an elevation of from a point on the ground. If, after five seconds, its elevation from the same point, is , then the speed (in ) of the aeroplane is
Choose an option
Show full solutionCorrect option: D
Correct answer
D1440
Step-by-step explanation
For
For . As, a distance of is covered in 5 seconds. Therefore the speed of the plane is
For . As, a distance of is covered in 5 seconds. Therefore the speed of the plane is
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Heights and Distances chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2018, covering the Heights and Distances chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.