An ALGaAs laser with bandgap = 1.55 eV forms a quantum well laser with an active region of 5 nm thick. Assuming that the effective mass of the valence and conduction bands are twice the mass of an electron what is the shortest wavelength that would be emitted, owing to electric current flowing through the active region?

explanation:

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the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.