You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Wave Equation

A tuning fork...

Question

A tuning fork vibrating with a sonometer having $20 c m$ wire produces $5$ beats per second. The beat frequency does not change, if the length of the wire is changed to $21 c m$ . The frequency of tuning fork is:

200 H z

No worries! We‘ve got your back. Try BYJU‘S free classes today!

210 H z

No worries! We‘ve got your back. Try BYJU‘S free classes today!

205 H z

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

215 H z

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $205 H z$
The frequency of sonometer decrease on increasing the length.
Thus $f_{1} - f_{0} = 5 = \frac{v}{2 (0.2)} - f_{0}$
and $f_{0} - f_{2} = 5 = f_{0} - \frac{v}{2 (0.21)}$
$⟹ v = 84 m / s$
Thus $f_{0} = 205 H z$

Suggest Corrections

Similar questions

Q. A tuning fork vibrating with a sonometer wire of length

20 c m

produces 5 beats per second. The beat frequency does not change if the length of the wire is changed to

21 c m

. The frequency of the tuning fork must be:

Q. A tuning fork vibrating with a sonometer in fundamental mode having a wire of length

20 cm

produces

5

beats per second. The beat frequency does not change if the length of the wire is changed to

21 cm

. The frequency of the tuning fork is

A tuning fork vibrating with sonometre wire of length 20cm produces 5 beats per second . The beat frequency doesn't change if length of wire is changed to 21cm , the frequency of tuning fork is

Q. A tuning fork vibrating with a sonometer in fundamental mode having a wire of length

20 cm

produces

5

beats per second. The beat frequency does not change if the length of the wire is changed to

21 cm

. The frequency of the tuning fork is

Q. A tuning fork vibrating with a sonometer having

20 c m

wire produces

5

beats per second. If the beat frequency does not change if the length of the wire is changed to

21 c m

, then the frequency of the tuning fork

(

H z)

must be

Join BYJU'S Learning Program

A tuning fork vibrating with a sonometer having 20 cm wire produces 5 beats per second. The beat frequency does not change, if the length of the wire is changed to 21 cm. The frequency of tuning fork is:

The correct option is C 205 HzThe frequency of sonometer decrease on increasing the length.Thus f1−f0=5=v2(0.2)−f0and f0−f2=5=f0−v2(0.21)⟹v=84 m/sThus f0=205 Hz

A tuning fork vibrating with a sonometer having $20 c m$ wire produces $5$ beats per second. The beat frequency does not change, if the length of the wire is changed to $21 c m$ . The frequency of tuning fork is:

The correct option is C $205 H z$
The frequency of sonometer decrease on increasing the length.
Thus $f_{1} - f_{0} = 5 = \frac{v}{2 (0.2)} - f_{0}$
and $f_{0} - f_{2} = 5 = f_{0} - \frac{v}{2 (0.21)}$
$⟹ v = 84 m / s$
Thus $f_{0} = 205 H z$