by: Admin_LouisPosted on:

Which of the following is not a necessary precaution while performing an experiment on measurement of length?

Which of the following is not a necessary precaution while performing an experiment on measurement of length?

(A)Avoid parallax error
(B)Close windows to avoid air current.
(C)Avoid zero error.
(D)repeat the measurement

Ans: Close windows to avoid air current.

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