Physics
JAMB 1999
The inner diameter of a test tube can be measured accurately using a?
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A.
micrometer screw guage
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B.
pair of dividers
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C.
metre rule
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D.
pair of vernier calipers
Correct Answer: Option D
Explanation
A Vernier caliper is an instrument used to measure both the outer and inner diameters of a tube.
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