(b) Velocity of sound v = 350 m s-¹, frequency of note v = 250 cps = 250 Hz ∴ Wavelength of wave λ = υ /V = 350/250 m = 1.4 m https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(b) Velocity of sound v = 350 m s-¹, frequency of note v = 250 cps = 250 Hz
∴ Wavelength of wave λ = υ /V = 350/250 m = 1.4 m
(c) When a sound wave passes from air to water, the speed of sound, wavelength and amplitude change. But frequency of sound wave does not change. Thus, frequency of a wave is its most inherent property which does not change. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(c) When a sound wave passes from air to water, the speed of sound, wavelength and amplitude change. But frequency of sound wave does not change. Thus, frequency of a wave is its most inherent property which does not change.
No, the potential barrier across a p-n junction cannot be measured directly using a voltmeter because the depletion region lacks free charge carriers. The voltmeter measures external voltage, but the built-in potential exists internally, preventing direct measurement without disturbing the junctionRead more
No, the potential barrier across a p-n junction cannot be measured directly using a voltmeter because the depletion region lacks free charge carriers. The voltmeter measures external voltage, but the built-in potential exists internally, preventing direct measurement without disturbing the junction equilibrium.
If the velocity of sound in air is 350 m s⁻¹, a person singing a note of 250 cycles per second is producing sound waves with a wavelength of
(b) Velocity of sound v = 350 m s-¹, frequency of note v = 250 cps = 250 Hz ∴ Wavelength of wave λ = υ /V = 350/250 m = 1.4 m https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(b) Velocity of sound v = 350 m s-¹, frequency of note v = 250 cps = 250 Hz
∴ Wavelength of wave λ = υ /V = 350/250 m = 1.4 m
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See lessWhich of the following will remain unchanged when a sound wave enters from air in water?
(c) When a sound wave passes from air to water, the speed of sound, wavelength and amplitude change. But frequency of sound wave does not change. Thus, frequency of a wave is its most inherent property which does not change. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
(c) When a sound wave passes from air to water, the speed of sound, wavelength and amplitude change. But frequency of sound wave does not change. Thus, frequency of a wave is its most inherent property which does not change.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-11/
See lessWhich crop is not a fodder crop?
(a) It is a pulse crop. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-12/
(a) It is a pulse crop.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-12/
See lessNewton’s second law of motion helps to determine
(a) Newton's second law of motion helps to determine the magnitude of force. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-8/
(a) Newton’s second law of motion helps to determine the magnitude of force.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-8/
See lessCan the potential barrier across a p-n junction be measured by simply connecting a voltmeter across the junction?
No, the potential barrier across a p-n junction cannot be measured directly using a voltmeter because the depletion region lacks free charge carriers. The voltmeter measures external voltage, but the built-in potential exists internally, preventing direct measurement without disturbing the junctionRead more
No, the potential barrier across a p-n junction cannot be measured directly using a voltmeter because the depletion region lacks free charge carriers. The voltmeter measures external voltage, but the built-in potential exists internally, preventing direct measurement without disturbing the junction equilibrium.
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-14/