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प्रश्न
What is a bimetallic strip?
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उत्तर
A bimetallic strip consists of two metal strips- one with high coefficient of expansion and the other with low coefficient of expansion.
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संबंधित प्रश्न
Write down the temperature of the lower fixed point on the Fahrenheit scale.
What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?
Write the SI unit of coefficient of cubical expansion.
Name the substance which contracts when heated from 00C to 40C.
State three main characteristics of a thermometric substance.
Convert the following temperature into Fahrenheit scale:
1000C
Assertion (A): 0 °C = 273.16 K. For our convenience we take it as 273 K after rounding off the decimal.
Reason (R): To convert a temperature on the Celsius scale we have to add 273 to the given temperature.
Find the final temperature of a copper rod. Whose area of cross-section changes from 10 m2 to 11 m2 due to heating. The copper rod is initially kept at 90K. (Coefficient of superficial expansion is 0.0021 /K)
