Multiple choice

The temperature of a hot body, when measured by radiation pyrometer, is found to be 2450 deg. celsius assuming a surface emissivity of 0.85. Later on, it was found that the true surface emissivity is 0.78. Determine the actual temperature and error in temperature measurement.

  1. 2509 deg. celsius; - 59 deg. celsius

  2. 2509 deg. celsius; - 72 deg. celsius

  3. 3000 deg. celsius; - 60 deg. celsius

  4. 3490 deg. celsius; - 60 deg. celsius
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Actual Temperature = 2782 - 273 = 2509 deg. celsius Error in temperaure measurement = 2450 - 2509 = -59 deg. celsius

Keep practicing — related questions