Question

the distance is 6m, find the wavelength when 5 waves take 10 seconds​

Answer 1

Explanation:

Beats=δ

1

−δ

2

=

3

30

-------- (1)

δ

1

=

λ

1

v

and δ

2

=

λ

2

v

From (1):

λ

1

v

−

λ

2

v

=10

v(

5

1

−

6

1

)=10

v=

6−5

5×6×10

=300 m/s

Answer 2

Solution

Verified by Toppr

Correct option is A)

Beats=δ1−δ2=330 -------- (1)

δ1=λ1v and δ2=λ2v

From (1):

λ1v−λ2v=10

v(51−61)=10

v=6−55×6×10=300 m/s

v=6−55×6×10=300 m/s