A multiple slit diffraction grating has a slit separation of 2.00 ...

[yoooooman]

A multiple slit diffraction grating has a slit separation of 2.00  10-6 m. Find the wavelength of the monochromatic light that will have its second order (m = 2) bright fringe diffracted through an angle of 43.4. (1 nm = 10-9 m)
 a. 616 nm
  c. 687 nm
  b. 500 nm
  d. 120 nm

Question 2

Diffraction grating 1 has twice the lines/cm that diffraction grating 2 does. When used with a certain wavelength of light, both gratings give first order (m = 1) maxima. Which of the following statements is true for the same wavelength of light.
 a. Both gratings must also give second (m = 2) order maxima. b. It is possible that neither grating gives a second order maximum.
  c. Grating 1 must give a second order maximum.
  d. Grating 2 must give a second order maximum.

[Ksh22]

Answer to Question 1

C

Answer to Question 2

D

[yoooooman]

Thanks for the timely response, appreciate it

[Kedrick2014]

Excellent