TS EAMCET · Physics · Current Electricity
The resistance of a thermometer is \(100 \Omega\) at the triple point of water \((273 \mathrm{~K})\) ) and is \(300 \Omega\) at the melting point of gold \((-873 \mathrm{~K})\). The temperature at which the resistance of the thermometer is \(200 \Omega\) is
- A \(273 \mathrm{~K}\)
- B \(373 \mathrm{~K}\)
- C \(473 \mathrm{~K}\)
- D \(573 \mathrm{~K}\)
Answer & Solution
Correct Answer
(D) \(573 \mathrm{~K}\)
Step-by-step Solution
Detailed explanation
At \(273 \mathrm{~K}\) or \(0^{\circ} \mathrm{C}\), resistance, \(R_0=100 \Omega\) At \(873 \mathrm{~K}\) or \(600^{\circ} \mathrm{C}\), resistance \(R_{600}=300 \Omega\) Now, let at \(\theta\) temperature resistance is given \(R_\theta=200 \Omega\) \[ \theta=\text { ? } \] By…
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