The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by

The earth radiates in the infrared region of the spectrum. The wavelength of the maximum intensity of the spectrum is correctly given by

What is the wavelength region of visible spectrum ?

The largest wavelength in the ultraviolet region of the hydrgoen spectrum is 122nm. The smallest wavelength in the infrared region of the hydrogen spectrum ( to the nearest integer )is :

The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infrared region of the hydrogen spectrum (to the nearest integer) is