Question

No other thermometer is as suitable as a platinum resistance thermometer to measure temperatures in the entire range of

• A. $-{50}^{\circ }C$ to $+{350}^{\circ }C$
• B. $-{200}^{\circ }C$ to $+{600}^{\circ }C$
• C. $0^{\circ }C$ to $+{100}^{\circ }C$
• D. ${100}^{\circ }C$ to $+{1500}^{\circ }C$

Answer 1

The correct option is B $-{200}^{\circ }C$ to $+{600}^{\circ }C$

Platinum resistance thermometer is suitable to measure temperatures in the entire range of $-{200}^{o}C$ to $+{600}^{o}C$
since its resistance varies linearly in this temperature range
option (B) is the correct answer.