Question

least count of thermometer observation table

Answer 1

Least count of the thermometer = 1/Number of Parts in one Fahrenheit block. If the thermometer is measuring in Cecius or Kelvin scale then use the Formula, Least count of the thermometer = 1/ Number of Parts in one Centigrade or Kelvin block.

Answer 2

Least count: Least count of any measuring instrument is the smallest quantity the instrument can measure with utmost precision. The scale can measure 0.1 centimeter with utmost precision, hence the least count of the scale is 0.1 cm.