(Answered) When white light composed of all wavelengths as opposed to

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When white light, composed of all wavelengths (as opposed to monochromatic light that is composed of one wavelength of light), is shone through a diffraction grating, bands of various colours appear on the screen. For example, there may be first-order (m = 1) fringes for red, orange, and yellow as well as second or third order fringes for these colours.

In this particular case, white light is shone on a grating that is 1.00 cm wide and contains 10 000 lines. Firstorder fringes are produced for three colours of light at angles of 30^o, 35^o, and 40^o. Find the wavelengths that produce first-order maxima at these angles. Find out what colours are associated with these wavelengths.

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