Give below are some functions of x and t to represesnt the displacement of an elastic wave.
`(i) ``y=5cos (4x) sin (20t)`
(ii) `y=4sin(5x-t//2)+3cos(5x-t//2)`
(iii) `y=10cos[(252-250)pit]cos[(252+2500pit]` (iv)` y=100cos(100pit+0.5x)`
State which of these represent
(a) a travelling wave along-x direction
(b) a stationary wave
(c) beats
(d) a travelling wave along `+x` direction
Give reasons for your answers.

Give below are some functions of x and t to represent the displacement of an elastic wave. (i) y=5cos (4x) sin (20t) (ii) y=4sin(5x-t//2)+3cos(5x-t//2) (iii) y=10cos[(252-250)pit]cos[(252+250pit] (iv) y=100cos(100pit+0.5x) State which of these represent (a) a travelling wave along-x direction (b) a stationary wave (c) beats (d) a travelling wave along +x direction Give reasons for your answers.

Given below are some functions of x and to represent the displacement of an elastic wave. (i) y = 5 cos (4x) sin (20t) (ii) y = 4 sin (5x - (t)/(2)) + 3 cos (5x - (t)/(2)) (iii) y = 10 cos {(252 -250)pi t] cos {(252 +250)pi t] (iv) y = 100 cos (100 pi t + 0.5 x) State which of these represent (a) a travelling wave along-x direction (b) a stationary wave (c) beats (d) a travelling wave along + x direction. Give reasons for your answers.

Given below are some functions of x and t to represent the displacement of an elastic wave. y=10cos[(252-250)pit]cos[(252+250)pit]

Given below are some functions of x and t to represent the displacement of an elastic wave. y=100cos(100pit+0.5x) State which of these represent a travelling wave along -x direction a stationary wave beats a travelling wave along +_(x) directions. Given reason for your answers.

Given below are some functions of x and t to represent the displacement of an elastic wave. y= 5 cos (4x) sin (20t) State which of these represent (a) a travelling wave along (−x) direction (b) a stationary wave (c) beats (c) a travelling wave along (+x) direction. Give reasons for the answers.

Given below are some functions of x and t to represent the displacement of an elastic wave. y=4 cos (5x-t/2)+3 cos (5x-t/2). State which of these represent (a) a travelling wave along (−x) direction (b) a stationary wave (c) beats (c) a travelling wave along (+x) direction. Give reasons for the answers.

Given below are some functions of x and t to represent the displacement (transversal or longitudinal) of an elastic wave. Identify the waves . y = 2 cos (3x) sin (10t)

Given below are some functions of x and t to represent the displacement (transversal or longitudinal) of an elastic wave. Identify the waves . y = cos x sin t + cos 2 x sin 2 t

Given below are some functions of x and t to represent the displacement (transversal or longitudinal) of an elastic wave. Identify the waves . y = 3 sin (5x -0 . 5 t) + 4 cos (5 x - 0 . 5 t)