Physics Form Three Annual Exam Lumumba Sec PDF
Download Physics Form Three Annual Exam 2025 Lumumba Secondary School
PHYSICS FORM THREE ANNUAL EXAMINATION 2025 LUMUMBA SECONDARY SCHOOL
SECTION C
9. (a) The coefficient of linear expansion of iron is 0.000012 K-1
(i) Explain the meaning of this statement.
(ii) Calculate the superficial expansion of the iron.
(iii) Determine the cubical expansion of the iron.
(b) A brick 30 cm x 18 cm x 10 cm is at 20°C.If the brick heated to a temperature of 150°C, what will be its new dimensions?
(c) The specific heat capacity of acetic acid is approximately one half times that of water. Equal masses of water at 20°C and acetic acid at 80°C are mixed together in an insulated cup. What will the final temperature of the mixture be at thermal equilibrium?
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