Question

find the frequency of electromagnectic wave of wavelength 2m​

Answer 1

≡QUESTION≡

Find the frequency of electromagnetic wave of wavelength 2 m.​

                                                           

║⊕ANSWER⊕║

The equation that relates wavelength, frequency, and speed of light is

c = λv

c is the speed of light

λ is the wavelength

v is the frequency

Given

Wavelength = 2 m

Speed of light = 3 * 10⁸ m/s

Substituting the given values,

3 * 10 ⁸ = 2 * v

v = 1.5 * 10⁸ Hz

∴ The frequency of an electromagnetic wave of length 2 m is 1.5 * 10⁸ Hz.

                                                             

Answer 2

Question

Find the frequency of an electromagnetic wave of wavelength 2m

Solution

Given,

• Wavelength = 2 m

• Speed of Light,c = 3 × 10^8 m/s

To finD

Frequency of the wave

Using the Relation,

$\sf \: c = \dfrac{ \lambda}{T} \\ \\ \longmapsto \: \sf \: c = \lambda \: \times f \\ \\ \longmapsto \: \boxed{ \boxed{ \sf \: f = \dfrac{c}{ \lambda} }}$

Substituting the values,we get :

$\sf \: f = \dfrac{3 \times {10}^{8} }{2} \\ \\ \longrightarrow \: \boxed{ \boxed{ \boxed{ \sf{f = 15 \times {10}^{7} \: \: {s}^{ - 1} }}}}$