Physics · Electrical Measurements
How is a parallax error avoided while reading a moving iron type voltmeter equipped with an anti-parallax mirror?
- 1By positioning the eye such that the pointer exactly overlaps its image in the mirror.✓
- 2By reading the scale from the leftmost division.
- 3By placing the meter at eye-level horizontally.
- 4By aligning the eye at exactly 45° to the pointer.
Correct answer
By positioning the eye such that the pointer exactly overlaps its image in the mirror.
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