In binary, frequency shift keying (BFSK), the given signal waveform are –

u₀(t) = 2 cos (40000 πt) ; 0 ≤ t ≤ T

u₁(t) = 2 cos (42000 πt) ; 0 ≤ t ≤ T

‘T’ is the bit-duration interval ant t is in seconds

Both u₀(t) and u₁(t) are zero outside with a matched filter based receiver the value of T (in milliseconds) required to have u₀(t) and u₁(t) uncorrelated is ______