Author Question: A diffraction grating has 300 lines per mm. If light of wavelength 630 nm is sent through this ... (Read 79 times)

saraeharris · **on:** Jul 29, 2018

A diffraction grating has 300 lines per mm. If light of wavelength 630 nm is sent through this grating, at what angle does the first order maximum occur?

A)

56
B)

44
C)

22
D)

11
E)

28

Question 2

If an electron is accelerated through a potential difference of 500 V between two parallel plates separated by a distance of 2.0 cm. The change in kinetic energy of the electron during this motion is

A)

100 eV.
B)

2000 eV.
C)

250 eV.
D)

500 eV.
E)

1000 eV.