WBJEE · Physics · Ray Optics
Light travels through a glass plate of thickness \(t\) and having refractive index \(\mu\). If \(c\) be the velocity of light in vacuum, time taken by the light to travel through this thickness of glass is
- A \(\frac{t}{\mu C}\)
- B \(\frac{t c}{\mu}\)
- C \(\frac{\mu t}{c}\)
- D \(\mu \mathrm{tc}\)
Answer & Solution
Correct Answer
(C) \(\frac{\mu t}{c}\)
Step-by-step Solution
Detailed explanation
Thickness of glass plate \(=t\) Refractive index \(=\mu\) Velocity of light = c \[ \begin{array}{r} \text { Speed of light }=\frac{\text { distance }}{\text { time }}=\frac{t}{T} \\ \qquad T=\frac{t}{\text { speed of light }} \end{array} \] Speed of light in glass plate…
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