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Beat Frequency -
module of
- wherein
Where
are frequency of two wave differ slightly in value of frequency.
Beats produced is max difference two wave frequency
(1) and (2) x-(x-1) =1
(2) and (3) (x+1) -x = 1
(1) and (3) (x+1) (x-1) = 2
Option 1)
1
Incorrect option
Option 2)
4
Incorrect option
Option 3)
3
Incorrect option
Option 4)
2
Correct option