(c) The speed of sound is more in solids, less in liquids and least in gases. Therefore, sound travel fastest in steel medium. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(c) The speed of sound is more in solids, less in liquids and least in gases. Therefore, sound travel fastest in steel medium.
(a) does not change. On a levelled road h and hence potential energy Ep = mgh remains unchanged. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(a) does not change. On a levelled road h and hence potential energy Ep = mgh remains unchanged.
(c) A mutual sound has three characteristics namely (i) loudness, (ii) pitch and (iii) quality or timbre. Wavelength is not a characteristic of a musical sound. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(c) A mutual sound has three characteristics namely (i) loudness, (ii) pitch and (iii) quality or timbre. Wavelength is not a characteristic of a musical sound.
(b) The pitch of sound of a musical note depends upon its frequency only. Higher the frequency, higher the pitch (shrillness) of sound. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(b) The pitch of sound of a musical note depends upon its frequency only. Higher the frequency, higher the pitch (shrillness) of sound.
The speed of sound is largest in
(c) The speed of sound is more in solids, less in liquids and least in gases. Therefore, sound travel fastest in steel medium. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(c) The speed of sound is more in solids, less in liquids and least in gases. Therefore, sound travel fastest in steel medium.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See lessSpeed of sound (v) in a medium is related to its frequency (v) and wavelength (λ) as :
(a) Correct relation is v = v × λ https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(a) Correct relation is v = v × λ
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See lessA car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process, the potential energy of the car
(a) does not change. On a levelled road h and hence potential energy Ep = mgh remains unchanged. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(a) does not change. On a levelled road h and hence potential energy Ep = mgh remains unchanged.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See lessSame notes being played on guitar and harmonium differ in
(c) A mutual sound has three characteristics namely (i) loudness, (ii) pitch and (iii) quality or timbre. Wavelength is not a characteristic of a musical sound. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(c) A mutual sound has three characteristics namely (i) loudness, (ii) pitch and (iii) quality or timbre. Wavelength is not a characteristic of a musical sound.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See lessThe pitch of sound of a musical note depends upon its
(b) The pitch of sound of a musical note depends upon its frequency only. Higher the frequency, higher the pitch (shrillness) of sound. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(b) The pitch of sound of a musical note depends upon its frequency only. Higher the frequency, higher the pitch (shrillness) of sound.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See less