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According to their frequencies, waves are separated into three categories:
(1) Audible or sound waves : Range 20 Hz to 20 KHz. These are formed by vibrating bodies like as vocal cords, membrane or stretched strings.
(2) Infrasonic waves : Frequency lie below 20 Hz.
Example : waves formed during earth quake, ocean waves etc.
(3) Ultrasonic waves : Frequency greater than 20 KHz. Human ear cannot listen these rays, certain creatures such as dog, bat and mosquito show result to these.
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Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the source com
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The proton and neutron are collectively called as: (1) Deutron (2) Positron (3) Meson (4) Nucleon Ans: (4) Nucleon
Q. What are electromagnetic waves? As-per to Maxwell a speed up charge is a source of electromagnetic radiation. In an electromagnetic wave electric as well as magnetic field
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If the angle of incidence is 60 degrees,then what is the angle of deviation?
what type of transformer we use in this
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