alleryAn ellipse can be drawn using pins, a pencil and a:
AA steel compass
BA plastic scale
CA length of string
DA wooden ruler
Answer & Solution
Correct answer: C. A length of string
1. The two pins mark the foci of the ellipse.
2. Something must be held taut between them.
3. That is a length of string.
_Source: syllabus Physics Part I, Chapter 8, Gravitation._
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