Question

A tuning fork vibrating in water with a frequency of 840 Hz produces waves that are 2.5 m long. If a tuning fork vibrating at 500 Hz produces the same type of wave in water, what will the wavelength of the waves be?
A) 1.5 m
B) 4.2 m
C) 3.2 m
D) 2.5 m

Answer 1

Answer:

Option B

Explanation:

As we know

Frequency (F) * wavelength (W) = C (speed of light - can also be taken as constant)

Hence,

$F1 W1 = C\\F2W2 = C$

Or $F1W1 = F2W2$

Substituting the given values, we get -

$840 *2.5 = 500 *XX = 4.2$ m

Hence, option B is correct