Q1. Consider the following statements:
1. A flute of smaller length produces waves of lower frequency.
2. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statements given above is/are correct?
1. A flute of smaller length produces waves of lower frequency.
2. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statements given above is/are correct?
Explanation
Statement 1 is incorrect: The frequency of sound produced by a flute is inversely proportional to its length. A shorter flute produces sound waves of higher frequency (higher pitch), while a longer flute produces sound waves of lower frequency (lower pitch).
Statement 2 is incorrect: Sound (or seismic waves) in rocks travels in both longitudinal (P-waves) and transverse (S-waves) forms. Longitudinal waves compress and expand the material, while transverse waves move the material perpendicular to the direction of propagation of the wave.