Double-Slit Interference: In a two-slit experiment using coherent light, the distance between the slits and the screen is 1.10 m, and the distance between the slits is 0.0400 mm. If the second order bright fringe is measured to be 4.20 cm from the centerline on the screen, what is the wavelength of light?

A. 200 nm
B. 381 nm
C. 401 nm
D. 620 nm
E. 763 nm


Answer: E

Physics & Space Science

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Fill in the blank(s) with correct word

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A. 0.91 B. 0.911 C. 0.9108 D. 0.9

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The light from an incandescent bulb is composed of

A. only red and blue. B. only red, green, and blue light. C. only red, yellow, and turquoise. D. all wavelengths in the visible portion of the electromagnetic spectrum. E. None of these choices are correct

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A factory siren indicating the end of a shift has a frequency of 80 Hz. What frequency is perceived by the occupant of a car traveling away from the factory at 30 m/s? The speed of sound in air is 343 m/s

A) 73 Hz B) 75 Hz C) 77 Hz D) 79 Hz E) 81 Hz

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