Who want to do 19 gemotry assiments for $$$ dm on insta Cody_chasen_

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Me d is also an option but i couldn't get it in the picture

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?