Question 1 (1 point) Multi slit interference patterns are more similar to double slit, than single slit. True False Question 2 (1 point) The following picture depicts light going through three slits. If you close slit 3, what will happen to the bright spots on the screen? UJNIl _ -; Ii: They stay roughly in the same place and get brighter a: They stay roughly in the same place and get dimmer a: They change places and get brighter Ii: They change places and get dimmer Question 3 (1 point} What is a diffraction grating? '77:] Many slits evenly spaced, on the order of 300 lines/mm '77:] CD/ DVD '77:] Something like a cheese grater shrunken down in size '77:] shutter shades Question 4 [1 point} A diffraction grating is placed 1.00 m from a viewing screen, Light from a hydrogen lamp goes through the grating. Hydrogen's first spectral line with a wavelength of 656 nm is seen 60.0 cm to one side of the center. Then the hydrogen lamp is replaced with a mercury lamp. Mercury has a spectral line with a wavelength of 546 nm where is this line seen on the screen? '77:] 36.4 cm I7_::.I 49.9 cm \\ '77:] 75.3 cm :7_:: 22.3 cm Question 5 [1 point] A diffraction grating is placed 1.00 m from a viewing screen. Light from a hydrogen lamp goes through the grating. Hydrogen's first spectral line with a wavelength of 656 nm is seen 60.0 cm to one side of the center. Then the hydrogen lamp is replaced with a new lamp. A spectral line is seen on the screen 36.4 cm away from the center. What is its wavelength? '17:: 609 nm I7:::I 436 nm '17:: 502 nm .7"). 397 nm