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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In a two-slit experiment, the third bright fringe away from the central fringe is observed at an angle of 7.0°. If the wavelength of the light is 490 nm, what is the distance between the two slits?
A) 3.6 × 10-5 m B) 4.0 × 10-6 m C) 2.1 × 10-6 m D) 2.1 × 10-5 m E) 1.2 × 10-5 m
Monochromatic light hits a piece of glass. What happens to the wavelength in the glass as the index of refraction increases?
a. decreases b. increases c. remains constant d. approaches 3 × 10^8 m
The thermal pressure in an object increases when the temperature increases, but the degeneracy pressure does not
Indicate whether the statement is true or false
A wind farm generator uses a two-bladed propeller (see figure) mounted on a pylon at a height of 20 m
The length of each propeller blade is 12 m. A small piece from the tip of the propeller breaks off when the propeller is vertical. At that instant, the period of the motion of the propeller is 1.2 s. The fragment flies off horizontally, falls with negligible air resistance, and strikes the ground at P. (a) How far is point P from the base of the pylon? (b) At what angle with respect to the vertical is the fragment moving just as it strikes the ground at P? What will be an ideal response?