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SAT® Subject Test in Physics

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Moderate

Wavelength of Laser

SATPHY-FXQ57J

Students in a lab are trying to determine the wavelength of laser light by shining the laser through two narrow slits separated by 9.60 micrometers toward a screen 4.00 meters away. The first order bright fringes are 23.0 centimeters from the center fringe.

What wavelength do the students determine?

A

$680\ nm$

B

$552\ nm$

C

$883\ nm$

D

$167\ nm$

E

$8,832\ nm$