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Solution


Q.

Statement-I: The fundamental frequency of an open organ pipe increases as the temperature is increased.

Statement-II: As the temperature increases, the velocity of sound increases more rapidly than length of the pipe.
1 Statement-I is true, Statement-II is true; Statement-II is correct explanation for Statement-I.  
2 Statement-I is true, Statement-II is true; Statement-II is not a correct explanation for Statement-I.  
3 Statement-I is true, Statement-II is false.  
4 Statement-I is false, Statement-II is true.  

Ans.

(1)

f∝V    &    V∝T  (where T is Temperature)