Question

Q1: A monochromator was equipped with a diffraction grating of 1,932 blazes per millimeter. If 2.0cm of the grating were illuminated, what is the first order (n=1) resolving power of the monochromator (λ/∆λ)?

Q2: At approximately 451nm, what is the minimum wavelength difference that could be completely resolved by an with R= 48,026?

Answer #1

A diffraction grating has 5000 rulings per centimeter. It is
used to observe the light of wavelength 546.08 nm.
1) At what angle does the m = 2 maximum occur?
2) What is the highest order maximum observed and at what angle
does it occur?
3) If this wavelength has to be resolved from a wavelength of
546.06 nm, what is the minimum chromatic resolving power
required?
4) If the two wavelengths are to be resolved in the m =...

A diffraction grating is made with 750 lines per millimeter is
illuminated with violet light of wave length 400nm. How many lines
can be observed with this grating? If the intense white light is
incident on the same diffracting grating what is the angular
separation between the violet edge (400nm) and red edge (700nm)?
What is the highest order in which the complete visible spectrum
can be seen using this grating (λ =400-700nm)?

A diffraction grating is made up of slits of width 400 nm with
separation 1100 nm. The grating is illuminated by monochromatic
plane waves of wavelength λ = 720 nm at normal incidence.
(a) How many maxima are there in the full
diffraction pattern? (b) What is the angular width
of a spectral line observed in the first order if the grating has
960 slits?
Question 2 :
A diffraction grating is made up of slits of width a
with...

A student views a neon light tube through a spectroscope, which
has a diffraction grating of 550 lines/mm and a viewing screen 25
cm from the grating. The observer sees the first-order
red line at a distance of 92.97 mm from the hole in spectroscope
viewing screen.
1. Calculate the wavelength of the red light coming from the
Neon light tube.
2. Calculate the maximum order of the interference fringe for
this wavelength.
3. Calculate the resolving power for this spectroscope...

A diffraction grating is made up of slits of width 400 nm with
separation 1100 nm. The grating is illuminated by monochromatic
plane waves of wavelength λ = 720 nm at normal incidence.
(a) How many maxima are there in the full
diffraction pattern? (b) What is the angular width
of a spectral line observed in the first order if the grating has
960 slits?

A diffraction grating is made up of slits of width 440
nm with separation 1300 nm. The grating is illuminated by
monochromatic plane waves of wavelength λ = 810 nm at normal
incidence. (a) How many maxima are there in the
full diffraction pattern? (b) What is the angular
width of a spectral line observed in the first order if the grating
has 1300 slits?

Suppose that you have a reflection diffraction grating with
n= 105 lines per millimeter. Light from a sodium lamp
passes through the grating and is diffracted onto a distant
screen.
Two visible lines in the sodium spectrum have wavelengths 498
nmand 569 nm. What is the angular separation ?? of the
first maxima of these spectral lines generated by this diffraction
grating?
How wide does this grating need to be to allow you to resolve
the two lines 589.00 and...

How many lines per millimeter are there on a diffraction grating
that gives a first-order maximum for 470-nm blue light at an angle
of 250 ?
A) 900 lines/mm
B) 111 lines/mm
C) 8.99 X 105 lines/mm
D)53,000 lines/mm

A 3.2-cmcm-wide diffraction grating has 2100 slits. It is
illuminated by light of wavelength 530 nmnm .
A. What is the angle (in degrees) of the first diffraction
order?
B. What is the angle (in degrees) of the second diffraction
order?

A 500
lines per mm diffraction grating is illuminated by light of
wavelength 540 nm .
You may want to review (Pages 544 - 547) .
Part A
What is the maximum diffraction order seen?

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