Tiwari Academy Discussion

Arush Kumar

Asked: October 28, 2020In: Class 9

Why is sound wave called a longitudinal wave?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-4

Arush Kumar

Asked: October 28, 2020In: Class 9

Which characteristic of the sound helps you to identify your friend by his voice while sitting with others in a dark room?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-5

Arush Kumar

Asked: October 28, 2020In: Class 9

Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-6

Arush Kumar

Asked: October 28, 2020In: Class 9

The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-9

Arush Kumar

Asked: October 28, 2020In: Class 9

Does sound follow the same laws of reflection as light does? Explain.

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-10

Arush Kumar

Asked: October 28, 2020In: Class 9

When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-11

Arush Kumar

Asked: October 28, 2020In: Class 9

When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-11

Arush Kumar

Asked: October 28, 2020In: Class 9

Give two practical applications of reflection of sound waves.

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-12

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g = 10 m s^–2 and speed of sound = 340 m s^–1.

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-13

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

A sound wave travels at a speed of 339 m s^–1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-174 Questions No-14

Why is sound wave called a longitudinal wave?

Which characteristic of the sound helps you to identify your friend by his voice while sitting with others in a dark room?

Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?

The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

Does sound follow the same laws of reflection as light does? Explain.

When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

Give two practical applications of reflection of sound waves.

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g = 10 m s^–2 and speed of sound = 340 m s^–1.

A sound wave travels at a speed of 339 m s^–1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

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