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Q55 (NDA-II/2025) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Thermal physics Answer Verified

The temperature of a body increases from 310 K to 340 K. The temperature increase in degree Celsius is

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Your answer: —  Â·  Correct: B
Explanation

The temperature increase of a body is calculated by finding the difference between the final and initial temperatures. In this case, the increase is 340 K - 310 K = 30 K. To determine the increase in degrees Celsius, it is essential to understand the relationship between the Kelvin and Celsius scales. The formula for conversion is T(°C) = T(K) - 273.15. While the absolute values on each scale differ by approximately 273.15, the size of one degree Celsius is exactly the same as the size of one Kelvin. Therefore, any change in temperature (ΔT) expressed in Kelvin is numerically identical to the change in temperature expressed in degrees Celsius. Consequently, a 30 K increase in temperature corresponds exactly to a 30°C increase.

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