Question

2. If a sound wave travels with a frequency of 1.25 x 104 Hz at 344 ms-1, the w
(50 KHZ,
will be
(27.52 m, 275.2 m, 0.02752 m, 2.752 m)
3. The sound waves are reflected from an obstacle into the same medium f
they were incident which of the following changes?
(speed, frequency, wavelength, none of these)
4. Sound wave is a --
(transverse, longitudinal, electromagnetic, none of these)
5. Sound travels fast in
wave.
(solids, liquids, gases, vacuum)
6. The minimum distance needed for an echo is
(172 m, 1720 m, 17.2 m, 1.72 m)
7. When humidity increases then the speed of sound
(decreases, increases, remains same, decreases then increases)
8. Infrasonic waves have frequency​

Answer 1

Answer:

Konsi khichdi paka rahain ho sir

Explanation:

If a sound wave travels with a frequency of 1.25 x 104 Hz at 344 ms-1, the w

(50 KHZ,

will be

(27.52 m, 275.2 m, 0.02752 m, 2.752 m)

3. The sound waves are reflected from an obstacle into the same medium f

they were incident which of the following changes?

(speed, frequency, wavelength, none of these)

4. Sound wave is a --

(transverse, longitudinal, electromagnetic, none of these)

5. Sound travels fast in

wave.

(solids, liquids, gases, vacuum)

6. The minimum distance needed for an echo is

(172 m, 1720 m, 17.2 m, 1.72 m)

7. When humidity increases then the speed of sound

(decreases, increases, remains same, decreases then increases)

8. Infrasonic waves have frequen