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GUJCET · Physics · Wave Optics
In a Young's double slit experiment, the slits are separated by 0.2 mm and screen is placed 2.0 m away. The distance between the central bright fringe and the third bright fringe is measured to be 1.5 cm. Determine the wavelength of light used in the experiment.
- A \(4200 Å\)
- B \(5000 Å\)
- C \(4600 Å\)
- D \(6000 Å\)
Answer & Solution
Correct Answer
(B) \(5000 Å\)
Step-by-step Solution
Detailed explanation
\(\lambda = \frac{y_n d}{n D}\) \(\lambda = \frac{(1.5 \times 10^{-2}) (0.2 \times 10^{-3})}{3 \times 2.0}\)
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