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NEET · Physics · STD 12 - 10. Wave optics
In a double slit experiment, when light of wavelength \(400\; nm\) was used, the angular width of the first minima formed on a screen placed \(1 \;\mathrm{m}\) away, was found to be \(0.2^{\circ} .\) What will be the angular width of the first minima, if the entire experimental apparatus is immersed in water.......\(^o\) \((\mu_{water } =4 / 3 )\)
- A \(0.266\)
- B \(0.15\)
- C \(0.05\)
- D \(0.1\)
Answer & Solution
Correct Answer
(B) \(0.15\)
Step-by-step Solution
Detailed explanation
\(\theta^{\prime}=\theta / \mu\) \(\therefore \theta^{\prime}=\frac{0.2^{\circ}}{4 / 3}=0.15^{\circ}\)
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