If a beam of light from a He-Ne laser has wavelength 543 nm in air, what is its wavelength in water? The index of refraction for water is 1.33.

360 nm

540 nm

408 nm

722 nm

Question

If a beam of light from a He-Ne laser has wavelength 543 nm in air, what is its wavelength in water? The index of refraction for water is 1.33.
 
       360 nm

        540 nm

        408 nm

        722 nm

anonymous · Answer

@Jemurray3 can you help me maybe if you have time?

anonymous · Answer

@beccaboo333 please help me?

anonymous · Answer

The wavelength of light in a material is equal to the wavelength in vacuum divided by the index of refraction.

directrix · Answer

@Daniellelovee 

543/1.33 =

directrix · Answer

>>The wavelength of light in a material is equal to the wavelength in vacuum divided by the index of refraction.

If this is correct.

daniellelovee · Answer

thank you :)