Sound WavesHard
Question
Length of a sonometer wire is either 95 cm or 100 cm. In both the cases a tuning fork produceses 4 beats then the frequency of tuning fork is : -
Options
A.152
B.156
C.160
D.164
Solution
For sonometer wire
n × 100 = (n + 1) × 95
n = no of harmonics
⇒ n = 19
∴ f = 19
+ 4 = 20 
- 4 ⇒ L = 16
⇒ f = 20
- 4 = 156 Hz
n × 100 = (n + 1) × 95
n = no of harmonics
⇒ n = 19
∴ f = 19
+ 4 = 20 - 4 ⇒ L = 16⇒ f = 20
- 4 = 156 HzCreate a free account to view solution
View Solution FreeMore Sound Waves Questions
A sonometer wire has a total length of 2m between the fixed ends. Two wooden bridges are placed below the wire at a dist...A rocket is moving away from the earth at a speed of 6 × 107m/s. The rocket has blue light in it. What will be the ...In an open organ pipe $v_{3}$ and $v_{6}$ are $3^{\text{rd~}}$ and $6^{\text{th~}}$ harmonic frequencies, respectively.I...The wavelength of light, while it is passing through water is 540 nm . The refractive index of water is $\frac{4}{3}$. T...A stone dropped from the top of a tower of height 300 m high splashes into the water of a pond near the base of the towe...