Gce Model Questions Vol1 2019 Physics Question 44

Practice objective / multiple choice question 44 from the 2019 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2019 Physics Objective / Multiple Choice Medium Difficulty
Question 44 GCE_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • objective

A string of length \(0.80\) m is fixed at both ends and vibrates in its third harmonic. The speed of transverse waves on the string is \(80\) m s\(^{-1}\). (a) Determine the wavelength and frequency of this standing wave. (b) If the tension in the string is increased so that the wave speed becomes \(100\) m s\(^{-1}\) while the harmonic number remains the same, find the new frequency.

Answer Options

A. a) λ = 0.80 m, f = 100 Hz; b) f' = 125 Hz
B. a) λ = 0.53 m, f = 120 Hz; b) f' = 150 Hz
Correct Answer C. a) λ = 0.53 m, f = 150 Hz; b) f' = 187.5 Hz
D. a) λ = 0.40 m, f = 150 Hz; b) f' = 187.5 Hz
Correct Answer
C
Correct Option:
a) λ = 0.53 m, f = 150 Hz; b) f' = 187.5 Hz

About This Question

This is Gce Model Questions Vol1 2019 Physics Question 44. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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