Question

The graphs given in figure represent a wave pulse at the instant t=0 and 1=0.01 sec. The speed of wave is
(a) 20 m/s
(b) 40 m/s
(c) 10 m/s
(d) 80 m/s​

Answer 1

Answer:

The graphs given in figure represent a wave pulse at the instant t=0 and 1=0.01 sec. The speed of wave is

c) 10 m/s

Answer 2

Answer:

The speed of the wave is given in option (b) 40m/s.

Step-by-step explanation:

We have graph representing a wave pulse at the instant t=0 and 1=0.01 sec.  It is asked to calculate the speed of the wave from the graph.

When you see the graph of t=0.01 second then you find that wave travel 40 cm distance in 0.01 sec then we can calculate the speed of wave as

Speed = Distance travelled/ Time taken

Speed

$=\frac{40cm}{0.01Sec}\\=\frac{40*100m}{100sec}\\=40m/s$

And it is given in option (b) 40m/s So option (b) is the correct option.