Electromagnetic Spectrum

Question

1.  A wave has a wavelength of 1.16 x 10¹⁵ meters. The frequency of the wave is
2.  A wave has a frequency of 1.50 x 10⁸ Hz. The wavelength of the wave is

Answer 1

The relationship between wavelength (λ) and frequency (ν) is given by:

c = λν where c is the speed of light = ~3x10⁸ m/sec

1). c = λν

3x10⁸ m/sec =1.16x10¹⁵ m (ν)

ν = 3x10⁸ m/sec / 1.16x10¹⁵ m

ν = 2.59x10^-7 sec^-1

2). c = λν

3x10⁸ m/sec = (1.50x108 sec^-1)(λ) ... note that Hz is equal to sec^-1

λ = 3x10⁸ m/sec / 1.50x10⁸ sec^-1)

λ = 2 m