Advertisements
Advertisements
प्रश्न
A sound wave of wavelength 1/3 m has a frequency 996 Hz. Keeping the medium same, if frequency changes to 1328 Hz. Calculate
- velcoity of sound
- new wavelength.
Advertisements
उत्तर
Wavelength = λ = `1/3` m
Frequency = f = 996 Hz
(i) Velocity of sound = v = ?
v = λf
v = `1/3 xx 996 = 332` ms-1
(ii) New frequency = f = 1328 Hz
v = 332 ms-1
New wavelength = λ' = ?
v = λ'f
332 = λ' × 1328
λ' = `332/1328 = 1/4` m
λ' = 0.25 m
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
Female voice is shriller than the male voice.
What is a transverse wave? In which medium: solid, liquid or gas, can it be produced?
Select the correct option:
A part of the longitudinal wave in which particles of the medium are closer than the normal particles is called:
What kinds of waves are produced in solids, liquids, and gases?
A continuous disturbance is created on the surface of water in a ripple tank with a small piece of cork floating on it. Describe the motion of the cork. What does the motion of the cork tell about the disturbance?
On placing your ear close to an iron railing which is tapped some distance away, sound is heard twice. Explain, why?
Match the following.
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
Note is a sound
Write any two uses of ultrasonic sound.
