A constant-volume gas thermometer reads 50 cm Hg at 0°C and 90 cm Hg at 100°C. At 60 cm Hg its temperature is 5x °C. Find x.
Physics · Mixed Chapter
JEE Main Practice

Question

A constant-volume gas thermometer reads 50 cm Hg at 0°C and 90 cm Hg at 100°C. At 60 cm Hg its temperature is 5x °C. Find x.

G1 Physics · Accepted Answer

Step 1: The pressure reading is calibrated linearly across fixed points. Step 2: θ=(60−50)/(90−50)×100=10/40×100=25°C. Step 3: Given θ=5x°C, x=25/5=5.