What is meant by refraction of a wave?

999

---

What is transverse wave motion?

958

---

What is channel?

969

---

What is the velocity of sound air?

1057

---

How echo is produced?

933

---

What sound waves travel from air to water the frequency remains?

986

---

What is the quantity?

973

---

How many types of wave motions are there?

1022

---

What generates seismic waves?

1003

---

What is the loudness?

947

---

Which waves are used in sonography?

979

---

What is a synthesizer?

1003

---

What is audio frequency?

974

---

What are the characteristics of a musical sound?

900

---

In which medium the velocity of sound is large?

884

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