2. A single slit 1.0 mm wide is illuminated by 450-nm light. What is the width of the central maximum (in cm) in the diffraction pattern on a screen 7.0 m away?
3. Monochromatic light of wavelength 655 nm falls on a slit. If the angle between the first bright fringes on either side of the central maximum is 32 degrees, estimate the slit width.
4. A He-Ne gas laser which produces monochromatic light of a known wavelength ? =6.35 ? 10^7 ? is used to calibrate a reflection grating in a spectroscope. The first-order diffraction line is found at an angle of 22 degrees to the incident beam. How many lines per meter are there on the grating?
5. Light of wavelength 520nm falls on a slit that is 3.20 ? 10^3 ?? wide. Estimate how far the first brightish diffraction fringe is from the strong central maximum if the screen is 10.0 m away.
Trending now
This is a popular solution!
Step by step
Solved in 4 steps