Questions
A clock with an iron pendulum keeps correct time at 15°C . If the coefficient of linear expansion of iron is 0.000012/0C and the room temperature is 20°C it loses in a day
a
1.3 s
b
2.6 s
c
3.2 s
d
3.8 s
detailed solution
Correct option is B
Time lose = 12×αΔt×86,400=12×12×10−6×5×86,400=30×86,400×10−6=3×8.64×10−1= 2.6 secTalk to our academic expert!
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