Post-UTME Physics 2015 Objective — Question 9
Question 9 of 20 from the Post-UTME Screening (Post-UTME) Physics 2015 Objective paper, with the correct answer and a full explanation.
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A quantity of liquid has a volume of 80cm3 at 15C. If its cubic expansivity is 10-3K-1, calculate its volume at 45C.
- A. 82cm3Correct
- B. 75cm3
- C. 85cm3
- D. 78cm3
Explanation
Change in volume = V x gamma x deltaT = 80 x 10^-3 x 30 = 2.4cm3. New volume = 80+2.4 = 82cm3.
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