1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The equation of a stationary wave is $$y=2 \sin \left(\frac{\pi x}{15}\right) \cos (48 \pi t)$$. The distance between a node and its next antinode is

A
7.5 units
B
1.5 units
C
22.5 units
D
30 units
2
KCET 2018
MCQ (Single Correct Answer)
+1
-0
First overtone frequency of a closed pipe of length $l_1$ is equal to the second harmonic frequency of an open pipe of length $l_2$. The ratio $\frac{l_1}{l_2}$ is equal to
A
$\frac{3}{4}$
B
$\frac{4}{3}$
C
$\frac{3}{2}$
D
$\frac{2}{3}$
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