Define progressive wave. State any four properties.

Monjur Alahi

Define progressive wave. State any four properties.


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Salim Ahmed Kawsar

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Waves in which a disturbance created at one place travels to distant points and keeps travelling unless stopped by an external force are known as travelling or progressive waves. 

Properties of progressive waves are : Amplitude, wavelength, period, double periodicity, frequency and velocity.

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The average power transmitted by a progressive wave in term of standard notations is

`P_(av)=(1)/(2)(Tomega^(2)A^(2))/(V)` where `V=sqrt((T)/(mu))` and `omega=2pif`.

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1. Define herbarium. 2. Mention any four essentials of a good herbarium.

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If the wavelength of the wave is 24 cm, then the distance between the first compression and the third subsequent rarefaction in a longitudinal wave is

Correct Answer - 60 cm

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If first wave of feminism was focused on Right to vote, the second wave of feminism was focused on

A) Education and health

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12 In a plane electromagnetic wave, the directions of electric field and magnetic field are represented by \( \hat{ k } \) and \( 2 \hat{ i }-2 \hat{ j } \), respectively. What is the unit vector along direction of propagation of the wave? (a) \( \frac{1}{\sqrt{2}}(\hat{ i }+\hat{ j }) \) (b) \( \frac{1}{\sqrt{2}}(\hat{ j }+\hat{ k }) \) (c) \( \frac{1}{\sqrt{5}}(\hat{ i }+2 \hat{ j }) \) (d) \( \frac{1}{\sqrt{5}}(2 \hat{ i }+\hat{ j }) \)

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The property of an element to exist in two or more physical forms with same chemical properties but different physical properties is called

C) allotropy

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State the properties that should be possessed by a medium for a mechanical wave to propagate through it.

1. The medium must be continuous and elastic so that it can regain its original state as soon as the deforming forces are removed. 2. The medium should possess inertia. It...

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State the mathematical expression for a transverse progressive wave travelling along the positive and negative x-axis.

i. Consider a transverse progressive wave whose particle position is described by x and displacement from equilibrium position is described by y. Such a sinusoidal wave can be written as follows: ∴...

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For a progressive wave, in the usual notation

Correct option is: (B) n = \(\frac{v}{λ}\)

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