Q93 / 125 · BITSAT 2021 · Physics

Green light of wavelength $5460 Å$ is incident on an airglass interface. If the refractive index of glass is $1.5$, the wavelength of light in glass would be $\left(\mathrm{c}=3 \times 10^{8} \mathrm{~ms}^{-1}\right)$

  • Correct answer
    A
    $3640 Å$
  • B
    $5460 Å$
  • C
    $4861 Å$
  • D
    None of the above

Solution

$\mathrm{a}^{\lambda} \mathrm{g}=\frac{\lambda_{\mathrm{a}}}{\mu}=\frac{5460}{1.5}=3640 Å$

Hence, the correct answer is option: 'A'.

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