waec model questions vol1 2024 physics
Objective • Question 4
Question 4
WAEC_MODEL_QUESTIONS_VOL1
•
2024
A metal rod is heated from one end, causing a temperature gradient along its length. If the temperature at one end is 100°C and at the other end is 20°C, and the length of the rod is 2 m, calculate the rate of heat transfer through the rod if its thermal conductivity is 50 W/m·K.
Answer Options
A.
1000 W.
B.
2500 W.
Correct Answer
C.
2000 W.
D.
1500 W.
Correct Answer
C
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