A) 5
B) 7
C) 8
D) 3
Correct Answer: B
Solution :
Key Idea The number of beats will be the difference of frequencies of the two strings. Frequency of first string \[c{{m}^{-2}}{{s}^{-1}}\] \[\varepsilon \]\[\varepsilon \] Similarly, frequency of second string \[\varepsilon \]\[\varepsilon \] Number of beats\[\hat{i}+2\hat{j}+\hat{k}\] = 7 beatsYou need to login to perform this action.
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