To reduce parallax error when reading a spring's extension, you could:

  1. use a curved ruler
  2. attach a pointer to the spring and read at eye level
  3. read from below
  4. close one eye only
Answer

B) attach a pointer to the spring and read at eye level

Accurate reading. SLO P-11-N-27 · Understanding

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise