Question

10. Identify the correct match from the following
1. Amplitude a. Reflection of sound
2. Frequency. b. Maximum displacement from mean position
3. Echo c. Rapid to and fro motion
4. Vibration. d. Number of oscillation in one second
a. 1-a, 2-b, 3-c, 4-d
b. 1-c , 2-a , 3-b , 4-d
c. 1-b , 2-b , 3-c, 4-a
d. 1-b , 2-d , 3-a , 4-c​

Answer 1

Answer:

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Explanation:

your answer is option d

Answer 2

Explanation:

1) Reflection of Sound

This can lead to resonances called standing waves in rooms. It also means that the sound intensity near a hard surface is enhanced because the reflected wave adds to the incident wave, giving a pressure amplitude that is twice as great in a thin "pressure zone" near the surface.

2) Solution: (a) Amplitude - The maximum displacement of a wave on either side of its mean position is called Amplitude. (b) Frequency - Number of oscillations made by a wave in one second is known as frequency.

3) oscillatory motion

4) The number of oscillations per second of a vibrating object is known as its frequency. Time period is the time required to complete one oscillation.

hop it's help you