Two sources of light illuminate a double slit simultaneously. One has wavelength 570 nm and the second has an unknown wavelength. The m = 5 bright fringe of the unknown wavelength overlaps the m = 4 bright fringe of the light of 570 nm wavelength
What is the unknown wavelength? A) 456 nm
B) 326 nm
C) 380 nm
D) 713 nm
A
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Double-Slit Interference: An optical engineer needs to ensure that the bright fringes from a double-slit are 15.7 mm apart on a detector that is 1.70 m from the slits. If the slits are illuminated with coherent light of wavelength 633 nm, how far apart should the slits be?
A. 68.5 ?m B. 74.0 ?m C. 79.5 ?m D. 63.0 ?m
__________is the process by which an atmosphere traps heat and raises the temperature of a planetary surface
A) The greenhouse effect B) Global warming C) Differentiation D) The Tyndall effect
Momentum is conserved during a completely inelastic collision
Indicate whether the statement is true or false
What makes up the interstellar medium?
A) O and B stars B) open clusters C) K and M stars D) gas and dust E) all of the above