A) Ruler should be placed away from the object whose length is to be measured.
B) Worn out portions of the ruler should be used for measuring.
C) There should be a gap of at least 4 cm between the ruler and the object whose length is to be measured.
D) All the above
E) None of these
Correct Answer: E
You need to login to perform this action.
You will be redirected in
3 sec