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Questions  

The temperature of two bodies measured by a thermometer are (20±0.5)°C and (50±0.5)°C. Calculate the temperature difference with error limits.

a
(70±1)°C
b
(40±1)°C
c
(30±0)°C
d
(30±1)°C

detailed solution

Correct option is D

50°C±0.5°C-20°C±0.5°C=(30±1)°C

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