In a resistance thermometer- the resistances at 0- C and 100- C are 6-74 and 7-74 ohm respectively- The temperature corresponding to 6-53 ohm resistance is-

The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at $10^{\circ} C a n d 100^{\circ} C$ . The temperature at which the resistance is 3.26 ohm is

Q. The resistance of a conductor is

5 ohm

50^{\circ} C

and

6 ohm

100^{\circ} C

. Its resistance at

0^{\circ} C

Q. Resistance of a platinum resistance thermom-eter is 2 ohm at

20^{\circ} C

, 4ohm at

100^{\circ} C

and 2.2 ohm at some temperature. this temperature-is

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In a resistance thermometer, the resistances at 0∘C and 100∘C are 6.74 and 7.74 ohm respectively. The temperature corresponding to 6.53 ohm resistance is.

The correct option is C −21∘Cα=R2−R1R1t2−R2t1∴α=0.0025RT11+αT1=RT21+αT2∴1+αT=1.63T=252K

In a resistance thermometer, the resistances at $0^{\circ} C$ and $100^{\circ} C$ are 6.74 and 7.74 ohm respectively. The temperature corresponding to 6.53 ohm resistance is.

The correct option is C $- 21^{\circ} C$
$α = \frac{R_{2} - R_{1}}{R_{1} t_{2} - R_{2} t_{1}}$
$∴ α = 0.0025$
$\frac{R_{T 1}}{1 + α T_{1}} = \frac{R_{T 2}}{1 + α T_{2}}$
$∴ 1 + α T = 1.63$
$T = 252 K$