Atch. E. Give reasons for the following statements.1. Astronauts on moon use sign language to communicate.2. The female voice is shriller in general than a male voice.3. The minimum distance of a wall from a source of sound so that an echo is produced is 17 m.4. Sound has maximum speed in solids and least speed in gases.E Answer briefly.1. Which part of humans produces sound?2. Which part of the following instruments vibrate to produce sound?a) Dholak b) Flute3. How do dolphins and whales communicate?4. Why do different instruments have different sound qualities?5. Interpret the graphs and answer the following:ucoerial2s3s Timeasjon0.5 m0.2 m3s

Atch. E. Give reasons for the following statements.1. Astronauts on

1.	Atch. E. Give reasons for the following statements.1. Astronauts on moon use sign language to communicate.2. The female voice is shriller in general than a male voice.3. The minimum distance of a wall from a source of sound so that an echo is produced is 17 m.4. Sound has maximum speed in solids and least speed in gases.E Answer briefly.1. Which part of humans produces sound?2. Which part of the following instruments vibrate to produce sound?a) Dholak b) Flute3. How do dolphins and whales communicate?4. Why do different instruments have different sound qualities?5. Interpret the graphs and answer the following:ucoerial2s3s Timeasjon0.5 m0.2 m3s
Answer» OPTION a is the RIGHT ANSWER

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