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Question

If the wavelength of light emitted when an electron fall from the first excited state to the ground state are λ, the wavelength of emitted radiation when an electron fall from meta-stable state to the ground state will be

A
greater than λ
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B
less than λ
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C
λ
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D
cannot be determined
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Solution

The correct option is C cannot be determined
Since the position of metastable state is not mentioned, therefore the required wavelength may be greater than or less than or equal to λ.
Hence, cannot be determined.

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