A digital thermometer measures temperature using:

Temperature and Measurement – Key Questions for Class 6 Science
Mastering the concept of temperature is essential for understanding heat transfer and thermodynamics. This chapter includes various MCQs that test students on the proper usage of thermometers, conversion between different temperature scales and the role of heat energy in everyday life. These objective questions offer a structured approach to learning.

Ans.: (C)
A digital thermometer measures temperature using heat sensors