Yes, pre AI lenses may cause damage though
It has an "F" lens mount. source: http://www.dpreview.com/reviews/nikond50/page5.asp
Yes
Yes, it will fit. However, you will still need to see if the lens you have has or does not have features like autofocus or CPU connectors that will carry all the info that your camera needs... If it is a Nikon Lens it will work fine. So will others like Sigma, Tamron and Tokina. Carl Zeiss may not give you all the functions but will work in manual mode.
I think so
Yes
Yes, a Nikon F-mount bayonet will fit a Nikon D80 camera. The D80 is compatible with all Nikon F-mount lenses, allowing you to use a wide range of both autofocus and manual focus lenses. However, certain features, such as autofocus, may not work with older manual focus lenses. Always check for compatibility to ensure optimal performance.
Yes, if it is an f mount.
The Nikon D7000 uses a Nikon F lens mount type.
The Nikon D90 uses a Nikon F lens mount type.
The Nikon D3200 camera uses a Nikon F-mount type.
The Nikon D90 camera uses a Nikon F-mount type.
The Nikon D3400 camera has a Nikon F lens mount.