If the wavelength of electromagnetic radiation is increased to thrice the digital value, then what will be the percent change in the value of frequency of the electromagnetic radiation?

Explanation

We know that v can be expressed as: v = c/λ₁. Where v is the frequency, c is the speed of light and λ is the wavelength. v = c/λ₂ = c/3λ₁ % change in the frequency = {(v₂ - v₁) / v₁} * 100 By substituting the given values in the above expression we get the value of the % of the change in the frequency, % change in the frequency = {(c/3λ₁ - c/λ₁) / c/λ₁} * 100 = {(-2c/3λ₁) / c/λ₁} * 100 = (-2/3) * 100 = -0.66 * 100 = -66% Hence, if the wavelength of the electromagnetic radiation is increased to thrice the digital value, then the percent change in the value of frequency of the electromagnetic radiation is decreased by 66%.