TS EAMCET · Physics · Wave Optics
Young's double slit experiment is carried out by using green, red and blue light, one colour at a time. The fringe width recorded are \(\beta_G\) \(\beta_R, \beta_B\) respectively, then
- A \(\beta_G>\beta_B>\beta_R\)
- B \(\beta_B>\beta_G>\beta_R\)
- C \(\beta_R>\beta_B>\beta_G\)
- D \(\beta_R>\beta_G>\beta_B\)
Answer & Solution
Correct Answer
(D) \(\beta_R>\beta_G>\beta_B\)
Step-by-step Solution
Detailed explanation
Fringe width in YDSE is given by \(\beta=\frac{\lambda D}{d} \Rightarrow \beta \propto \lambda\) As, \(\quad \lambda_R>\lambda_G>\lambda_B \Rightarrow \beta_R>\beta_G>\beta_B\)
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