Question

20
and write the co
Note : i) Answer all the questions.
1. The frequency, which is audible to the human ear is
(50 KHz, 20 KHz, 15000 KHz, 10000 KHz)
2. If a sound wave travels with a frequency of 1.25 x 104 Hz at 344
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
they were incident which of the following changes?
(speed, frequency, wavelength, none of these)
4. Sound wave is a --
wave.
(transverse, longitudinal, electromagnetic, none of these)
5. Sound travels fast in
(solids, liquids, gases, vacuum)​

Answer 1

Answer:

1. The frequency which is audible to human ear is -20 KHz

2. If a sound wave travels with a frequency of 1.25 * 104 Hz at 344 what will be ......-0.02752 m

3. The sound waves are reflected from an obstacle into the same medium from which they were incident which of the .....- frequency

4. Sound wave is a _ wave - longitudinal wave

5. Sound travels fast in - solids

Answer 2

hey marlin.,

nxy-ynbr-qmw join fast