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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.
A simple pendulum is 4.00 m long. (a) What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator accelerating upward at 7.00m/s 2 ? (b) Wha
Q. What is Fresnel diffraction? a) The source as well as the screen are at finite distances from the obstacle producing diffraction. b) The wave front suffer diffraction is
insyrumentation
Your friend has gifted an earphone set to you. While music is on you will try to oppose the two ear phone pieces to attract. Task-I: Will they attract? If yes, why so? Task-II: Why
snth=u+a/2(2n-1)
Illustrate "Tangent law" in magnetism. Compare magnetic moment of two bar magnet in a tan A, tan B position by null method or equal distance method.
An electric kettle has a resistance of30?. What current will ?ow when it is connected to a 240V supply? Find also the power rating of the kettle A current of 5A ?ows i
In jk flip flop, Why toggle may oocur?
Ask questidefination and explanation of pesudo force on #Minimum 100 words accepted#
Q. State the law of conservation of electric charges? The entirety charge in an isolated system always remains constant. For instance Uranium ( 92 U 238 ) can decay by emittin
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