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In order to remove the error of parallax when t... - JAMB Physics 2012 Question

In order to remove the error of parallax when talking measurements with a metre rule, the eye should be focused
A
slantingly towards the right on the markings
B
slantingly towards the left on the markings
C
vertically downwards on the markings
D
vertically upwards on the markings
correct option: c
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