A thermometer calibrated in the Celsius scale and a thermometer calibrated in the Fahrenheit scale are used to measure the same temperature. The numerical reading on the Fahrenheit thermometera) is less than that on the Celsius thermometerb) is equal to that on the Celsius thermometerc) is greather than that on the Celsius thermometerd) may be any of these , depending on the temperature

d) may be any of these , depending on the temperature

Explanation:

Let at temperature t , reading of both Celsius and Fahrenheit scale be same

using the formula of conversion

(F - 32) / 9 = C / 5

(t - 32) / 9 = t / 5

5t - 160 = 9t

t = - 40° Celsius .

For temperature above it , reading of  Fahrenheit scale will be more . For temperature below it Fahrenheit scale will show lesser reading than  Celsius

reading .