Methane is a greenhouse gas because(a) it absorbs longer wavelengths o

1.	Methane is a greenhouse gas because(a) it absorbs longer wavelengths of the electromagnetic spectrum while transmitting shorter wavelengths(b) it absorbs shorter wavelengths of the electromagnetic spectrum while transmitting longer wavelengths(c) it absorbs all wavelengths of the electromagnetic spectrum(d) it transmits all wavelengths of the electromagnetic spectrum
Answer» Answer is : (a) it absorbs longer wavelengths of the electromagnetic spectrum while transmitting shorter wavelengths Heat through sun reaches earth in form of infrared radiations of higher frequency range approx 10¹⁴ Hz. This heat is absorbed by solids on earth’s surface and they re-radiate this heat in form of infrared radiations of lower frequency range approx 10¹⁰ Hz. These radiations are absorbed by greenhouse gases like methane and does not escapes into space causing warming of earth’s atmosphere.

Methane is a greenhouse gas because(a) it absorbs longer wavelengths of the electromagnetic spectrum while transmitting shorter wavelengths(b) it absorbs shorter wavelengths of the electromagnetic spectrum while transmitting longer wavelengths(c) it absorbs all wavelengths of the electromagnetic spectrum(d) it transmits all wavelengths of the electromagnetic spectrum

Answer»

Answer is : (a) it absorbs longer wavelengths of the electromagnetic spectrum while transmitting shorter wavelengths

Heat through sun reaches earth in form of infrared radiations of higher frequency range approx 10¹⁴ Hz. This heat is absorbed by solids on earth’s surface and they re-radiate this heat in form of infrared radiations of lower frequency range approx 10¹⁰ Hz. These radiations are absorbed by greenhouse gases like methane and does not escapes into space causing warming of earth’s atmosphere.

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