Question
CIVICS > ELECTION_COMMISSION
1) Two sound waves having equal amplitude but slightly different frequencies f and f2, produce beats whose frequency is
A) f1 X f2B) 2 X f1 X f2
C) |f1 - f2|D) f1 + f2
View Answer        RRB Se Exam 2014 yellow colour
Answer : |f1 - f2|




mukesh Says on 20/07/2015 08:23:35 pm :

ans-(C)


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