Page 13 - Final Science BB Prep2 Part one (2nd term) 2024-2025_Neat

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Science Prep.2

-The velocity of a wave is constant as it travels through the same medium

and differs as the nature of the medium changes.

-Wave velocity represents the velocity of the transfer of the energy carried

by the wave.

The Wave Propagation Law:

Wave velocity = Frequency x Wave length

V = F X λ

Examples:

Calculate the frequency of transverse wave its wave length is 2 m

and speed is 3 m/sec.?

<<Solution>>

V =  x   3 2 = 2     = = 1.5 Cycles/Sec or Hz

Calculate the wavelength in meter for a visible light wave of

Frequency 6x108 Megahertz & velocity 3 x 108 m/s.

<<Solution>>

Frequency = 6 x 10 x10 = 6 x10 14 Hertz
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8
Wavelength =V÷ F = 3 x10 ÷ 6 x10 14 = 0.5 x 10 meter.
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