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Question

A clock which has pendulum made of brass keeps correct time at 30C. How many seconds it will lose or gain in a day if temperature falls to 0C. (αbrass=1.8×103/C1)

  1. 23.33sec
  2. 24.33sec
  3. 26.33sec
  4. 25.33sec

A
25.33sec
B
23.33sec
C
24.33sec
D
26.33sec
Solution
Verified by Toppr

T0=2πL0gT+2πLgT=T0(1+αΔθ2)T=30[1+(1.8×103×302)]T=30[1+(0.9×103×30)]T=23.33sec

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