Question

the frequency of an electromagnetic radiation which makes 2 ×10^6 waves for 50 cm is

Answer 1

frequency = number of waves produced per second
= 2×10³×10³/ time —1
time = wavelength / speed of light
= 0.5 / 3×10power(8)
put time in equation —1

Answer 2

Answer:

   ν = 4 x 10⁶ hertz

Explanation:

GIVEN : Speed of EM radiation = 2 x 10⁶

               wavelength = 50 cm or 0.5 m

TO FIND : Frequency of the radiation

SOLUTION :

                V = λν

V = speed of radiation = 2x 10⁶

ν = frequency (x)

λ = wavelength = 0.5 m

           ν = 2x 10 ⁶/ 0.5

          ν =  4 x 10⁶ hertz

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