JEE Mains · Physics · STD 12 - 10. Wave optics
Two monochromatic light beams of intensity \(16\) and \(9\) units are interfering . The ratio of intensities of bright and dark parts of the resultant pattern is
- A \(\frac{16}{9}\)
- B \(\frac{4}{3}\)
- C \(\frac{7}{1}\)
- D \(\frac{49}{1}\)
Answer & Solution
Correct Answer
(D) \(\frac{49}{1}\)
Step-by-step Solution
Detailed explanation
Intensity \(\propto\) (amplitude) \(^{2}\) \(\frac{I_{1}}{I_{2}}=\frac{16}{9}=\frac{a_{1}^{2}}{a_{2}^{2}}\) \(\Rightarrow a_{1}=4 ; a_{2}=3\) Therefore the ratio of intensities of bright and dark parts…
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