Question

The initial and final temperatures are recorded as ${(40.6\pm 0.3)}^{0}C$ and ${(50.7\pm 0.2)}^{0}C$. The rise in temperature is:

• A. ${10.1}^{0}C$
• B. ${(10.1\pm 0.3)}^{0}C$
• C. ${(10.1\pm 0.5)}^{0}C$
• D. ${(10.1\pm 0.1)}^{0}C$

Answer 1

Answer: (C)

${(10.1\pm 0.5)}^{0}C$

Rise $=50.7-40.6={10.1}^{0}C$
Errors are always added: $0.3+0.2={0.5}^{0}C$
Hence, Rise in temp $=(10.1\pm 0.5{)}^{0}C$