Answer:
a) red wave hs a longer wavelength than the green wave
b)f = 1.875 10¹¹ Hz
, f_green = 5.45 10¹⁴Hz
c) E = 1.24 10⁻²² J
, E_green = 3.6 10⁻¹⁹ J
d) The red wave is in the infrared range, heat waves
The green wave is in the visible wavelength
Explanation:
a) The green wave are on the left in the electromagnetic spectrum so the red wave has a longer wavelength than the green wave
The green wavelength is in the range of 550 10⁻⁹ m
The speed of the wave is
c = λ f
f = c /λ
b) The frequency of the red wave is
f = 3 10⁸ / 1.6 10⁻³
f = 1.875 10¹¹ Hz
For the green wave
f_green = 3 10⁸/550 10⁻⁹
f_green = 5.45 10¹⁴Hz
c) The photon energy is given by the Planck equation
E = h f
E = 6.63 10⁻³⁴ 1.875 10¹¹
E = 1.24 10⁻²² J
For the green wave
E_green = 6.63 10⁻³⁴ 5.45 10¹⁴
E_green = 3.6 10⁻¹⁹ J
d) The speed of electromagnetic waves is constant and has a value of 3 108 m / s
e)
The red wave is in the infrared range, heat waves
The green wave is in the visible wavelength
