00:01
Here we need to find out the wavelength of the wave and the frequency right.
00:06
So from the second figure you could see that there is a like wavelength you can see in the x axis right.
00:14
So what is the wavelength? wavelength means there is a crest and there is a trough right.
00:20
So this is 1 .5 okay.
00:22
At 1 .5 the crest like gets over and after that we are getting trough here right.
00:31
So this is downward.
00:32
Then after this point this is again this wave is getting repeated okay.
00:39
So the same sequence is getting repeated.
00:42
So that means the wavelength would be this much right.
00:46
So 3 will be the 3 centimeter would be the like wavelength.
00:51
So wavelength would be 3 centimeters which is option number b is correct choice right.
01:08
So this is one answer right.
01:11
So this is first one.
01:17
I am sorry this is first one okay.
01:20
Yes...