Question

Question 6 in the given photo

Answer 1

$\underline\bold\pink{\huge{HELLO\:DEAR}}$

⭐⭐⭐ TERMS AND DEFINITIONS ⭐⭐⭐

1] Wavelength - The length of one wave is called its wavelength.
2] Wave velocity - The displacement covered by a wave in unit time is called wave velocity.
3] Frequency - The number of waves passing through a point in one second is called the frequency of a wave.

⭐⭐⭐⭐⭐ SOLUTION ⭐⭐⭐⭐⭐

Wavelength = 60 cm = 0.6 m (Given)
Time period= 0.01 s
$frequency \: = \: \frac{1}{time \: period}$

Now, we know that,

Wave velocity(v)=Frequency(f)×wavelength(w)
$v = \frac{1}{0.01} \times 0.6 \:$

$v = \frac{0.6}{0.01} = \: 60\:m/s$