The wavelength 21 cm emitted by atomic h...

The wavelength 21 cm emitted by atomic hydrogen in interstellar space belongs to

Radio waves

Infrared waves

Microwaves

`gamma`-rays

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Mention one use of part of electromagnetic spectrum to which a wavelength of 21 cm (emitted by hydrogen in interstellar space) belongs.

The 21 cm radio wave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction is atomic hydrogen. the energy of the emitted wave is nearly

The 21 cm radio wave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction is atomic hydrogen. The energy of the emitted wave is nearly

The 22 cm radiowave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction in atomic hydrogen. What is the energy of the emitted wave ?

The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is :

The wavelength of the radiation emitted by a hydrogen atom in the electronic transition from n=3 to n=2 is lambda . For the same transition in the singly ionized helium, the wavelength of the emitted radiation is

Suppose in certine condition only those transition are allowed to hydrogen atoms in which the principal quantum number a changes by 2 (a) Find the smaller wavelength emitted by hydrogen (b) list the wavelength emitted by hydrogen in the visible range (380 nm to 780 nm)

Find the minimum wavelength emitted by a hydrogen atom due to electronic transition.

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