1
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The fundamental frequency of an open pipe is 100 hz If the bottom end of the pipe is closed and $1 / 3$ rd of the pipe is filled with water, then the fundamental frequency of the pipe is

A
200 Hz
B
100 Hz
C
75 Hz
D
$150 \mathrm{H}_2$
2
AP EAPCET 2024 - 22th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The vibrations of four air columns are shown below. The ratio of frequencies is

AP EAPCET 2024 - 22th May Morning Shift Physics - Waves Question 3 English

A
$1: 2: 3: 4$
B
$1: 3: 2: 4$
C
$1: 4: 3: 2$
D
$1: 4: 2: 3$
3
AP EAPCET 2024 - 21th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
When a wave enters into a rarer medium from a denser medium, the property of the wave which remains constant is
A
wavelength
B
frequency
C
velocity
D
amplitude
4
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A car sounding a horn of frequency 1000 Hz passes a stationary observer. The ratio of frequen'ies of the horn noted by the observer before and after passing of the car is $11: 9$. The speed of car is (speed of sound $v=340 \mathrm{~ms}^{-1}$ )
A
$34 \mathrm{~ms}^{-1}$
B
$17 \mathrm{~ms}^{-1}$
C
$170 \mathrm{~ms}^{-1}$
D
$340 \mathrm{~ms}^{-1}$
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