Properties Of Solids And Liquids Question 576
Question: The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at $ 10{}^\circ C $ and $ 100{}^\circ C $ . The temperature at which the resistance is 3.26 ohm is
Options:
A) $ 40{}^\circ C $
B) $ 50{}^\circ C $
C) $ 60{}^\circ C $
D) $ 70{}^\circ C $
Show Answer
Answer:
Correct Answer: B
Solution:
Change in resistance $ 3.70-2.71=0.99\Omega $
Corresponds to interval of temperature $ 90{}^\circ C $ .
So change in resistance $ 3.26-2.71=0.55\Omega $
Corresponds to change in temperature $ =\frac{90}{0.99}\times 0.55=50{}^\circ C $
