Question

A tuning fork makes 256 vibrations per second in air. When the velocity of sound is 330 m/s wavelength of the wave emitted is ................... (a) 0.56 cm (b) 0.89 m (c) 1.11 m (d) 1.29 m

Answer 1

Answer:

(d) 1.29 m

Explanation:

As per the given data of the question,

We have,

The frequency of tuning fork = 256 vibrations per second = 256 Hz

Velocity of sound = 320 m/s

Formula used:

Speed = Wavelength × Frequency

Putting the data in the given formula we get the wavelength of the wave emitted.

⇒ 320 = Wavelength × 256

⇒ $Wavelength \  = \frac{320}{256}$

⇒ Wavelength = 1.289 ≈ 1.29 m

Hence, the wavelength of the wave emitted is 1.29 m.

Therefore, option (d) is the correct one.