The inner diameter of a test tube can be measured accurately using a

Assessment: JAMB UTME - Physics - 1999 Subject: Physics

Question 1 Report

The inner diameter of a test tube can be measured accurately using a
Answer Details
To measure the inner diameter of a test tube accurately, a pair of vernier calipers should be used. A vernier caliper is a precision measuring tool that is used to take measurements with a high degree of accuracy. It consists of two jaws, one fixed and one movable, that can be adjusted using a fine screw adjustment mechanism. The scale on the caliper is read using a vernier scale, which allows for precise measurements to be taken. A micrometer screw gauge can also be used for very accurate measurements, but for measuring the inner diameter of a test tube, a pair of vernier calipers would be more appropriate. A metre rule or a pair of dividers would not be accurate enough for this measurement.
Read lesson note on Measurements And Units (JAMB)
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