STANDARDPhysics-Thermal Expansion
STANDARD Physics Linear Expansion MCQ Question
Type: MCQ-numerical-Medium
To increase the length of brass rod by 2%, its temperature should increase by (α = 0.00002°C⁻¹)
A
800°C
B
900°C
C
1000°C
D
1100°C
Correct Answer
Option C
Detailed Explanation
The change in length ΔL is given by ΔL = αLΔT. To achieve a 2% increase, ΔL/L = 0.02. Solving 0.02 = αΔT gives ΔT = 1000°C.
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