A-LevelPhysicsSuperposition9702/12 · Feb/Mar 2018 · Q261 Mark
In a double-slit interference experiment, light of frequency 6.0 × 10¹⁴ Hz is incident on a pair of slits. Bright fringes that are 3.0 mm apart are observed on a screen some distance away. What is the separation of the bright fringes when the frequency of the light is changed to 5.0 × 10¹⁴ Hz?
A1.8 mm
B2.5 mm
C3.0 mm
D3.6 mm
✓ Correct answer
D: 3.6 mm
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