374

You visited us 374 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Beat Frequency

Two tuning fo...

Question

Two tuning forks $A$ and $B$ made of same material are slightly out of tune and produce beats of frequency $7 Hz$ . When $B$ is slightly filed, the beat frequency increases to $9 Hz$ . If the frequency of $A$ is $274 Hz$ , the original frequency of $B$ was

524 Hz

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

268 Hz

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

281 Hz

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

312 Hz

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

Open in App

Solution

The correct option is C $281 Hz$
As beat frequency increases on filing $B$

$f_{A} < f_{B} \Rightarrow f_{B} - f_{A} = 7 \Rightarrow f_{B} = f_{A} + 7$

$= 274 + 7 = 281 Hz$

Suggest Corrections

Similar questions

Q. In a guitar, two strings

A

and

B

made of same material are slightly out of the tune and produce beats of frequency

6 Hz

. When the tension in

B

is slightly decreased, the beat frequency increases to

7 Hz

. If the frequency of

A

530 Hz

, the original frequency of

B

will be:

Q. two sitar strings

A

and

B

are slightly out of tune and produces beat of frequency

5 H z

. When the tension in the string

B

is slightly increased, the beat frequency is found to reduce to

3 H z

. If the frequency of string

A

472 H z

, the original frequency of string

B

Q. Two sitar strings,

A

and

B

, playing the note 'Dha' are slightly out of tune and produce beats and frequency

5 H z

. The tension of the string

B

is slightly increased and the beat frequency is found to decrease by

3 H z

. If the frequency of

A

425 H z

, the original frequency of

B

Q. In a guitar, two strings

A

and

B

made up of the same material produce beats of frequency

4 Hz

. When the tension in

B

is slightly decreased, the beat frequency increases to

6 Hz

. If the frequency of

A

530 Hz

then the original frequency of

B

will be

Two guitar strings A and B are slightly out of tune and produce beats of frequency 6Hz.The tension of the string found to decrease to 4 Hz. What is the original frequency of B if the frequency of a is 430Hz?

Join BYJU'S Learning Program

Two tuning forks A and B made of same material are slightly out of tune and produce beats of frequency 7 Hz. When B is slightly filed, the beat frequency increases to 9 Hz. If the frequency of A is 274 Hz, the original frequency of B was

The correct option is C 281 HzAs beat frequency increases on filing B fA<fB⇒fB−fA=7⇒fB=fA+7 =274+7=281 Hz

Two tuning forks $A$ and $B$ made of same material are slightly out of tune and produce beats of frequency $7 Hz$ . When $B$ is slightly filed, the beat frequency increases to $9 Hz$ . If the frequency of $A$ is $274 Hz$ , the original frequency of $B$ was

The correct option is C $281 Hz$
As beat frequency increases on filing $B$

$f_{A} < f_{B} \Rightarrow f_{B} - f_{A} = 7 \Rightarrow f_{B} = f_{A} + 7$

$= 274 + 7 = 281 Hz$