In the fundamental mode, time taken by the wave to reach the closed end of the air filled pipe is 0.01 s . The fundamental frequency is

Question

In the fundamental mode, time taken by the wave to reach the closed end of the air filled pipe is 0.01 s . The fundamental frequency is (A)  25  (B)  12.5  (C)  20  (D)  15

Tardigrade Admin · Accepted Answer

In the fundamental mode, Frequency, n=(v/λ) n =(v/4 l) n =(l/t × 4 l) [∵ v=(l/t)] n =(1/0.01 × 4) n =25

Q. In the fundamental mode, time taken by the wave to reach the closed end of the air filled pipe is $0.01 s$ . The fundamental frequency is

$25$

$12.5$

$20$

$15$

In the fundamental mode,
Frequency, $n = \frac{v}{λ}$
$n = \frac{v}{4 l}$
$n = \frac{l}{t \times 4 l} [∵ v = \frac{l}{t}]$
$n = \frac{1}{0.01 \times 4}$
$n = 25$

Q. In the fundamental mode, time taken by the wave to reach the closed end of the air filled pipe is 0.01s . The fundamental frequency is

25

12.5

20

15