The time required for light to pass through a glass slab of 2 mm thickness is glass $(μ_{glass} 1.5)$

$10^{–8} s$ $10^{–6} s$ $10^{–11} s$ None of these

$10^{–11} s$

$t=\frac{d}{v}=\frac{d}{c/μ}=\frac{d.μ}{c}=\frac{2×10^{-3}×1.5}{3×10^8}sec=10^{-11}sec$