I. Simple pendulum
II. Fire alarms
III. Thermostat
IV. Bimetallic thermometer
A. III only
B. II & III only
C. I only
D. II, III & IV only
Correct Answer:
Option C – I only
Explanation
Simple pendulum does not depend on thermal expansion
Five alarms, Thermostat and Bimetallic thermometer are application of thermal expansion of solid
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