Physics-
General
Easy
Question
A tungsten wire, 0.5 mm in diameter, is just stretched between two fixed points at a temperature of 40°C. Determine the tension in the wire when the temperature falls to 20°C. (coefficient of linear expansion of tungsten 
; Young's modulus of tungsten 
)
- 6.097 N
- 3.097 N
- 5.097 N
- 7.097 N
The correct answer is: 6.097 N
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