What are the main environmental problems associated with

Solution: Electromagnetic radiations are the waves having both electric and magnetic fields associated with them. The arrangement of different types of electromagnetic radiations in the order of increasing wavelengths is called electromagnetic spectrum. The complete electromagnetic spectrum is given below: Step1: a) Given, wavelength of the radiation = 987 nm = 987 x 10 m9 [1 nm = 10 m] -7 = 9.87 x 10 m = 0.987 x 10 m6 -6 = 1 x 10 m (approx) From the above figure, it is seen that the radiation will lie in the infrared region of the electromagnetic spectrum. Step2: b) Again, according to Planck’s