Question 147: Waves

Question

A travelling harmonic wave is represented by the equation y(x,t) = 10
–3
sin (50t + 2x), where, x and y are in mater and t is in seconds. Which of the following is a correct statement about the wave ?

Accepted Answer

y = a sin($$\omega $$t + kx)
$$ \Rightarrow $$  wave is moving along $$-$$ve x-axis with speed
v = $${\omega  \over K}$$ $$ \Rightarrow $$  v = $${{50} \over 2}$$ = 25m/sec

Answer

The wave is propagating along the positive x-axis with speed 100 ms
–1

Answer

The wave is propagating along the positive x-axis with speed 25 ms
–1

Answer

The wave is propagating along the negative x-axis with speed 25 ms
–1

Answer

The wave is propagating along the negative x-axis with speed 100 ms
–1

Waves

A travelling harmonic wave is represented by the equation y(x,t) = 10 –3 sin (50t + 2x), where, x and y are in mater and t is in seconds. Which of the following is a correct statement about the wave ?

Choose the correct answer: