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April 21, 2014

Homework Help: physics

Posted by orange on Wednesday, May 30, 2012 at 5:31pm.

1) If the first order maximum of He-Ne light exits a diffraction grating at an angle of 40.7o, at what angle will the first order maximum of violet light with a wavelength of 418 nm exit?

What is He-Ne light?????

2) The most efficient antennae have a size of half the wavelength of the radiation they are emitting. How long should an antenna be to broadcast at 980 kHz?

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