38. On the basis of both experiments, which of the following statements regarding the relationship between observed frequency of vibration and the other physical variables is correct?
Your Answer is
Correct Answer is F
Explanation
As mentioned in the above question, you can observe that the pulling force decreases and the frequency decreases by eradicating trail 10 and 11 in table 2 and vice versa. The J option is more confusing, but comparing trail 1 and trail 12 will find that when the other conditions are the same, the material does not affect the frequency, so choose F