Question

a clock with a brass pendulum,keep correct time at 20 degree celcius,but loses 8.212 per day,when the tempereture rises to 30 degree celcius.Coefficient of lenier expantion of brass is?

Answer 1

Explanation:

Loss of time in a day=

2

1

×α×(t

2

−t

1

)×86400

So, 8.212=1/2×α×10×86400

Answer is 19×10

−16

/

o

C