Question

Consider the following statements.
11. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statement(s) given is/are correct?

• A. Only $1$
• B. Only $2$
• C. Both $1$ and $2$
• D. Neither $1$ nor $2$

Answer 1

The correct option is B Only $2$

1. Frequency produced by a string is inversely proportional to its length.

$f=\frac{v}{2L}$

2. Sound always travels as longitudinal wave through the propagating material.

So only statement 2 is correct.