A clock which keeps correct time at 20°C, is subjected to 40°C. If coefficient of linear expansion of the pendulum is 12 × 10⁻⁶ per °C. How much will it gain or loose in time?(a) 10.3 seconds/day(b) 20.6 seconds/day(c) 5 seconds/day(d) 20 minutes/day
Answers
Answered by
30
Answer:
(a) 10.3 seconds/day is the correct answer.
Explanation:
Given data:
A clock which keeps correct time at 20°C, is subjected to 40°C
coefficient of linear expansion of the pendulum = 12 × 10^-6 per °C.
To find:
How much will it gain or loose in time
We know that time lost or gained is given by
=1/2*a*dt
=1/2*(12×10^-6) *(20-0)
=1.2*10^-4
Thus for one day, time period is T=24*60*60
=86400
Thus, total time it will gain or lose is
= 86400*1.2*10^-4
=10.368 seconds/day.
Total time gained or lost is 10.36seconds/day.
(a) 10.3 seconds/day is the correct answer
Answered by
3
Answer:
a) 10.3 seconds/day is the correct answer
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