A pendulum clock made of invar has a period of 0.5s at 20OC. If the clock is used in a climate where average temperature is 30OC , how much fast or slow will the clock run in 106 seconds?αinvar =10−6C−1
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a
5 seconds fast
b
10 seconds fast
c
10 seconds slow
d
5 seconds slow
answer is D.
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Detailed Solution
ΔTT=12∝ΔT ∴ Total change =12×α×Δt×106=12×10−6×10×106=5 sec slow
A pendulum clock made of invar has a period of 0.5s at 20OC. If the clock is used in a climate where average temperature is 30OC , how much fast or slow will the clock run in 106 seconds?αinvar =10−6C−1