Waec Model Questions Vol1 2021 Physics Question 20
Practice objective / multiple choice question 20 from the 2021 Waec Model Questions Vol1 Physics examination.
A string of length 0.80 m is fixed at both ends. Its linear mass density is initially 0.010 kg m⁻¹ and the tension in the string is such that its fundamental frequency is 120 Hz. The tension is then increased by 20 % while the length remains unchanged. Under the new tension the frequency of the third harmonic is measured to be 540 Hz. Determine the new linear mass density of the string (in kg m⁻¹, expressed to three significant figures).
Answer Options
About This Question
This is Waec Model Questions Vol1 2021 Physics Question 20. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.