Problems: (Show yeur work for all caleulations.) 1. Irwhinelight is shown throug

Question

Problems: (Show yeur work for all caleulations.) 1. Irwhinelight is shown through a solurtioe absorbing light in the 500-600 nm range. the apparent color of the solution? 2. What color is light with wavelength in the 500-600 nm range? 3. Look at the radiation spectrum. What kind of radiation corresponds to a wavelength of 800 nm? 300 mm? (color) to the 4Light containing red, blue and yellow components appears human eye 5. Some radiation has a wavelength of 20,000 nm. What is the wavelength expressed in pm? mm? em? em What type of radiation is his? 6. If a solution appears to be red, what wavelengths of light are being absorbed? oo100 nm 7. An x-ray has a wavelength of 2 nm, how many A is this? A. 2(

Explanation / Answer

1. If a ligh absorbed in the range 500-600 nm (yellow-orange light), complimentary light with colour blue-violet will be emited and the colour appers as violet blue

2.yellow-orange

3. a. 800 nm radiation corrosponds to the red light in Visible region

b. 300 nm radiation corrosponds to the red light in ultra violet region and it is colour less

4. If we mix red, blue and yellow in equial portion then it shows as black colour to huan eye.

5. 1 nm = 10-9 m ; 1 pm = 10-12 m;1 mm = 10-3 m; 1 em = 4.2 *10-3 m

20000 nm = 20000 * 10-9 m = 20000000 * 10-12 m = 20000 pm

20000 nm = 20000 * 10-9 m = 20000 *10-6*10-3 m = 0.02 mm

20000 nm = 20000 * 10-9 m = 20000* 10-12 m = 0.0047* 10-2 m

20000 nm light belongs to Far Infrared lectro magnetic region.

6. If a solution appears red, then it absorbe complimentary colour, green colour wavelength.

7. 2 nm =20 Angstrams (Ao) ; 1 nm = 10 Ao

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