Waec Model Questions Vol1 2022 Physics Question 22

Practice objective / multiple choice question 22 from the 2022 Waec Model Questions Vol1 Physics examination.

Waec Model Questions Vol1 2022 Physics Objective / Multiple Choice Medium Difficulty
Question 22 WAEC_MODEL_QUESTIONS_VOL1 • 2022 • PHYSICS • objective

A metal rod of length 2 m and cross-sectional area 0.01 m² is heated from 20°C to 100°C. If the coefficient of linear expansion of the metal is 0.000012 /°C, calculate the increase in length of the rod. Additionally, if the rod is then cooled back to 20°C, what will be the change in length?

Answer Options

A. 1.50 mm; -1.50 mm
Correct Answer B. 1.92 mm; -1.92 mm
C. 1.00 mm; -1.00 mm
D. 2.40 mm; -2.40 mm
Correct Answer
B
Correct Option:
1.92 mm; -1.92 mm

About This Question

This is Waec Model Questions Vol1 2022 Physics Question 22. It is one of the objective questions from the 2022 Waec Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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