A clock pendulum made of invar has a period of 0.5 
at 
. If the clock is used in a climate where average temperature is 
, approximately. How much fast or slow will the clock run in 
. ( 
).
Text Solution
Verified by ExpertsThe correct answer is:
D
Change in time period will be
So due to increase in length time period will increase by 
. So clock will slow and in one time period means in 0.5 sec it slow by 2.5 
. Then in 1 sec it will slow by 
. So in 
it will slow by 
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