Which of the following actions will not cause an increase in the frequency of a vibrating string?
increasing the tension of the string
decrease the mass per unit length of the string
decrease the length of the string
increasing the cross sectional area of the string
Correct answer is D
No explanation has been provided for this answer.
Which of the following instruments is not a wind instrument?
clarinet
saxophone
trumpet
xylophone
Correct answer is D
No explanation has been provided for this answer.
beats
diffraction
overtones
resonance
Correct answer is A
No explanation has been provided for this answer.
312.0m
156.0m
78.0m
31.2m
Correct answer is B
x = \(\frac{vt}{2} = \frac{1560 \times 0.2}{2} = 156m\)
0.3cm
2.7cm
3.4cm
8.3cm
Correct answer is C
\(\frac{1}{f} = \frac{1}{u} + \frac{1}{v} = \frac{1}{3} - \frac{1}{25} = \frac{22}{75}\)
f = 3.4cm