What is the unknown wavelength

Reference no: EM13716748

A grating is illuminated with light from a He-Ne laser as well as with light having an unknown wavelength. It is observed that the fourth-order for the laser light coincides in position with the fifth-order image of the unknown wavelength. what is the unknown wavelength?

Reference no: EM13716748

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What is the unknown wavelength : A grating is illuminated with light from a He-Ne laser as well as with light having an unknown wavelength. It is observed that the fourth-order for the laser light coincides in position with the fifth-order image of the unknown wavelength. wha..

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