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Saturday, 15 August 2026
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Physics Past Questions and Answers

Topic: Solids

Jamb Physics Questions - Solids

Question 1:
the ratio of the linear expansivity of copper to that of iron is approximately 1.5. A specimen of iron and a specimen of copper expands by the same amount per unit rise in temperature. The ratio of their length is
  • A 3
  • B 1.5
  • C 1.32
  • D 1
  • E 0.67
View Answer & Explanation
Question 2:
A liquid-in-glass thermometer should quickly register temperature changes. This is achieved by choosing a liquid that
  • A Is opaque
  • B Has high density
  • C Has regular expansion
  • D Has a high thermal conductivity
  • E Can wet glass
View Answer & Explanation
Question 3:
A rod of length 10cm is heated through 100oC and its final length is 10.26cm. What is the co-efficient of linear expansion of the rod?
  • A 0.026 per degree centigrade
  • B 0.00026 per degree centigrade
  • C 0.26 per degree centigrade
  • D 1.0026 per degree centigrade
  • E 0.0026 per degree centigrade
View Answer & Explanation
Question 4:
The linear expansivity of brass is 2 x 10-5oC-1. If the volume of a piece of brass is 10cm3 at 0oC, what will be its volume at 100oC?
  • A 10.02cm<sup style='font-size: smaller;'>3</sup>
  • B 10.04cm<sup style='font-size: smaller;'>3</sup>
  • C 10.06cm<sup style='font-size: smaller;'>3</sup>
  • D 10.20cm<sup style='font-size: smaller;'>3</sup>
  • E 102.00cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 5:
A thin aluminum plate has a surface area of 1500m[/sup] at 20[sup]oC. What will be its surface area when it is cooled to -20oC? (Take the linear expansivity of aluminum to be 2.5 x 10-5k-1).
  • A 1.503m<sup style='font-size: smaller;'>2</sup>
  • B 1.500m<sup style='font-size: smaller;'>2</sup>
  • C 1.498m<sup style='font-size: smaller;'>2</sup>
  • D 1.497m<sup style='font-size: smaller;'>2</sup>
  • E 1.490m<sup style='font-size: smaller;'>2</sup>
View Answer & Explanation