A clock with an iron pendulum keeps correct time at 20º C. How much will it lose or gain in a day if the temperature changes to 40º C? (Coefficient of cubical expansion of iron = 0.000036/º C)
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(10.368 s)
Sol. Gain or loss in time due to thermal expansion
Δ t = 
× Δθ × t × α 
t = duration time
1 day = 24 × 3600 sec.
∴ Δ t = 
× 
× 20 × 24 × 3600
Δ t = 10.368 sec.
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