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Sound waves propagate through to and fro motion of particles of the medium. Since there are no particles in vacuum, So sound waves cannot travel
According to the first law of reflection, the angle of incidence is equal to the angle of reflection
Infrasound – Less than 20Hz,Audible Range – 20Hz to 20KHz, Ultrasound – Greater than 20Khz
Spikes on the soles of shoes increase the grip as the spikes allows the runner to push off the ground without slipping easily due to the normal
Because to form the complete image only two rays are to be passed through the lens and moreover, since the total amount of light released by the
In the above cases, rubbing of glass would have less resistive force due to poor interlocking. So, among the given cases rubbing of glass would
Infrasound – Less than 20Hz Audible Range – 20Hz to 20KHz Ultrasound – Greater than 20Khz
We know that, q=ne Also, I = q/t Hence t = ne/I = (1019 x 1.6 x10-19) / 8 = 0.2 s
This body could be taken as a cuboid of dimensions 2m x 3m x 4m.So, 2m is the length, 3m is the breadth and 4m is the height of the body.
Rate of flow of charge is called current. Hence, I=q/t =120 / (2 x 60) = 1 A