Question

What is the frequency of light having a wavelength of 776 nm? What is the wavelength (in nm) of radiation having a frequency of 8.91 × 109 Hz? (This radiation is in the microwave region.) (a) Frequency of light: × 10 Hz (Enter your answer in scientific notation) (b) Wavelength of radiation: × 10 nm (Enter your answer in scientific notation)

Answer 1

Relation between wavelength & frequency is 2=0 / where ao frequency ca vewat, of light - wavelength -9 x =176 nm = 176810 m ca) Given C3710 m/s 9 Tch X10710 3x10° mis 7168109 3 776 17 0.00384 X10 bi - 3.87X104 š" g'a = lla 14 So, frequency = 3.87X10 Hz But I X10 m Given, frequency = 8.91x109 Hz = 8.91 xi & Wavelength (0) = C 3x10 mis 3 8.90x108 8.91 Is = 0.3367 % 67x10m = 3367x10m = 3367x16ʻxso'm - 3367 X10 nm