If the sound heard by observer, whose equation is given as y=8 sin (10 π t) cos (200 π t) at x=0, then number of beat frequency heard by observer is 2 k. Then the value of k is

Question

If the sound heard by observer, whose equation is given as y=8 sin (10 π t) cos (200 π t) at x=0, then number of beat frequency heard by observer is 2 k. Then the value of k is (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Beat frequency =2((ω1-ω2/2 π))=2((10 π/2 π))=2 k Hence k=5

Q. If the sound heard by observer, whose equation is given as $y = 8 sin (10 π t) cos (200 π t)$ at $x = 0$ , then number of beat frequency heard by observer is $2 k$ . Then the value of $k$ is

Beat frequency
$= 2 (\frac{ω _{1} - ω _{2}}{2 π}) = 2 (\frac{10 π}{2 π}) = 2 k$
Hence $k = 5$

Q. If the sound heard by observer, whose equation is given as y=8sin(10πt)cos(200πt) at x=0, then number of beat frequency heard by observer is 2k. Then the value of k is

Beat frequency =2(2πω1​−ω2​​)=2(2π10π​)=2k Hence k=5

Q. If the sound heard by observer, whose equation is given as $y = 8 sin (10 π t) cos (200 π t)$ at $x = 0$ , then number of beat frequency heard by observer is $2 k$ . Then the value of $k$ is

Beat frequency
$= 2 (\frac{ω _{1} - ω _{2}}{2 π}) = 2 (\frac{10 π}{2 π}) = 2 k$
Hence $k = 5$