A laser shines 630-nm light through a grating producing a first order (m = 1) maximum at an angle of 30°. A second laser produces a first order maximum with the same grating at 20°. What is the wavelength emitted by the second laser?
a. 945 nm
c. 420 nm
b. 651 nm
d. 431 nm
D
You might also like to view...
Suppose that a white dwarf is gaining mass through accretion in a binary system. What happens if the mass someday reaches the 1.4 solar mass limit?
A) The white dwarf will collapse in size, becoming a neutron star. B) The white dwarf will undergo a nova explosion. C) The white dwarf will explode completely as a white dwarf supernova. D) The white dwarf will collapse to become a black hole.
Which is an asterism of Pegasus?
a. Great Square b. Orion c. Andromeda d. Scorpio e. Cassiopeia
If an object absorbs more energy than it emits, its
A) thermal energy decreases. B) temperature decreases. C) both of these D) none of the above
The chemical properties of calcium and strontium are similar because both
a. are located on the left side the periodic table. b. are in the same group. c. have four electrons in the first shell. d. are in the same period.