Physics (F.Sc)

Q: Laplace found that the alternate compressions and rarefactions produced in sound waves follows

(a) :  isothermal law
(b) :  adiabatic law
(c) :  isochoric law
(d) :  all of the above
(e) :  None
Answer:  adiabatic law
Explanation:  

Q: By the use of the cold water, two tumblers stuck together are separated by

(a) :  pouring cold water over the outer tumbler
(b) :  pouring cold water in the inner tumbler
(c) :  putting both tumblers in cold water
(d) :  can't be seperated by using cold water
(e) :  None
Answer:  pouring cold water in the inner tumbler
Explanation:  

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