Question

In a Young's double slit experiment, the fringe width is found to be 0.4 mm. If the whole apparatus is immersed in water of refractive index $\frac{4}{3}$, without disturbing the geometrical arrangement, what is the new fringe width?

• A. 0.1 mm
• B. 0.2 mm
• C. 0.3 mm
• D. 0.4 mm

Answer 1

The correct option is C

0.3 mm

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