AP EAMCET2007PhysicsThermal Properties of Matter
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 / ^ C . How much will it gain or lose time?
Options
- A10.3 ~s / day
- B20.6 s/day
- C5 s/day
- D20 ~min / day
Correct answer
A. 10.3 ~s / day
Step-by-step solution
T=2 I g aligned T T & = 1 2 l l = 1 2 & = 1 2 62 10⁻⁶(40-20)=12 10⁻⁵ T & =T 12 10⁻⁵ & =24 60 60 12 10⁻⁵ & =10.3 ~s / day aligned