Waves of Sound
Trending Questions
A man is standing between two parallel cliffs and fires a gun. If he hears first and second echoes after 1.5 s and 3.5 s respectively, the distance between the cliffs is (Velocity of sound in air = 340 ms−1)
1190 m
850 m
595 m
510 m
A listener moves towards stationary sound source with a constant speed and crosses it then the correct graph between Apparent frequency with time is please explain
Where does maximum constructive interference occur?
A stone is dropped from a 500 m tall building into a pond. When is sound of splash heard after the dropping of the stone? g = 10 m/s2, speed of sound = 340 m/s
10 s
1.47 s
11.47 s
immediately (at t = 0)
The speed of a wave is . What is the wavelength of the wave if its frequency is 500 Hz?
0.68 m
6.8 m
68 m
0.68 cm
Wave number
Wavelength
Wavevelocity
Frequency
(Given g=10 ms−2 and speed of sound =340 ms−1)
- 10 s
- 11.47 s
- 1.10 s
- 20 s
- 0.69×102 kg s−1
- 3.3×102 kg s−1
- 5.7×10−3 kg s−1
- 1.16×10−2 kg s−1
A man is standing in a valley between two parallel mountains. He fires a gun and hears echo at an interval of 2s and 3.5s. what is the distance between 2 mountains? (Take speed of sound = 350 m/s)
350 m
700 m
612.5 m
962.5 m
An organ pipe closed at one end and vibrating in its first overtone pipe open at both ends vibrating in its third overtone are in resonance with a given tuning fork. The ratio of the lengths of to that of is?
- 300m
- 150m
- 1080m
- 330m
- Frequency
- Wavelength
- Amplitude
- All of them
- 1190 m
- 850 m
- 595 m
- 510 m
- 1190m
- 850m
- 595m
- 510m
If in a medium wave's wavelength is decreased, what will happen to its frequency?
Decrease
Increase
Data insufficient need density too
Frequency Doesn't depend on wavelength
which changes
which does not change.
A man is standing in a valley between two parallel mountains. He fires a gun and hears echo at an interval of 2s and 3.5s. what is the distance between 2 mountains? (Take speed of sound = 350 m/s)
350 m
700 m
962.5 m
612.5 m
- 21s
- 10s
- 11.4s
- 1s
- 342ms−1
- 372ms−1
- 392ms−1
- 352−1
- 90.75 m
- 181.5 m
- 363 m
- 1650 m
A stone is dropped into a lake from a tower 500 metre high. Taking the speed of sound as 330 m/s, the sound of the splash will be heard by the man approximately after
11.5 seconds
10 seconds
14 seconds
21 seconds
A stone is dropped into a lake from a tower 500 metre high. Taking the speed of sound as 330 m/s, the sound of the splash will be heard by the man approximately after
11.5 seconds
21 seconds
10 seconds
14 seconds
- Their wavelength is very small
- Their wavelength is large
- It can refract
- It can reflect
- 420 m
- 390 m
- 340 m
- 260 m
If in a medium wave's wavelength is decreased, what will happen to its frequency?
Increase
Decrease
Frequency Doesn't depend on wavelength
Data insufficient need density too
(a) Wave number
(b) Wavelength
(c) Wave velocity
(d) Frequency
A stone is dropped from a 500 m tall building into a pond. When is sound of splash heard after the dropping of the stone? g = 10 m/s2, speed of sound = 340 m/s
10 s
1.47 s
11.47 s
immediately (at t = 0)