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WAVES
Waves carry energy from one place to another Transverse and longitudinal waves, Seismic waves Problems involving wavelength, frequency and wave speed Sound waves in a medium Radio waves, light and X-rays, electrom..
WAVES
Waves carry energy from one place to another Transverse and longitudinal waves, Seismic waves Problems involving wavelength, frequency and wave speed Sound waves in a medium Radio waves, light and X-rays, electrom..
Experiment to show that sound waves (mechanical waves) require a material medium for its propagation
Electric bell suspended inside an airtight glass bell jar An electric bell is suspended inside an airtight glass bell jar connected with a vacuum pump. As the electric bell circuit is completed, the sound is heard. Now if the air is slowly removed from the bell jar by using a vacuum p..
Electric bell suspended inside an airtight glass bell jar An electric bell is suspended inside an airtight glass bell jar connected with a vacuum pump. As the electric bell circuit is completed, the sound is heard. Now if the air is slowly removed from the bell jar by using a vacuum p..Reflection of Sound
Like light, sound waves also obey the laws of reflection and refraction. For sound waves to reflect, we need extended surface or obstacle of large size. For example, the rolling of thunder is due to successive reflections from clouds and land surfac..
Speed of Sound
The flash of lightning due to collision of clouds is seen much before the thunder, although both occur simultaneously. This happens because the velocity of light is greater than the velocity of sound. The speed of sound depends on (1) elasticity and (2) density of the ..
Reflection of Sound
When sound is incident on a solid or a liquid surfaceit bounces off the surface like light rays. Sound waves also obey the laws of reflection and refraction. For sound waves to reflect, we need extended surface or obstacle of large size. F..
A material medium is necessary for sound propagation
Ordinarily, we hear sound, transmitted through the air. Unlike light, sound cannot pass through vacuum. This was discovered in 1654 by Otto Von Guericke. Let an electric bell be enclosed within a bell jar which is placed over a disc. Through a hole in the disc, air ca..
sound waves are more easily bent than light waves
Sound waves can undergo reflection, refraction, interference and diffraction. But they cannot undergo polarization. Reflection of sound is evident in the environment in the form of echoes. The rolling of thunder is largely due to successive reflections from the cloud..
Diffraction
Diffraction - Diffraction in sound waves and radio waves are readings observed as they have a relatively longer wavelength compared to light waves..
Diffraction - Diffraction in sound waves and radio waves are readings observed as they have a relatively longer wavelength compared to light waves..Question 18
Question: Sound and light waves both 1. have similar wavelength 2. obey the laws of reflection 3. travel as longitudinal waves 4. travel through vacuum Answer: ..
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