The time taken by sunlight to cross a $5 m m$ thick glass plate $(μ = 3 / 2)$ is

0.25 \times 10^{- 10} S

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

1.67 \times 10^{- 7} S

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2.5 \times 10^{- 10} S

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1.167 \times 10^{- 10} S

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $0.25 \times 10^{- 10} S$
As we know,
$t = \frac{μ x}{c} = \frac{\frac{3}{2} \times 5 \times 10^{- 3}}{3 \times 10^{8}} = 0.25 \times 10^{- 10} s$

Suggest Corrections

Similar questions

\sqrt{\frac{2 \times (9 \times 10^{9}) (1.6 \times 10^{- 19}) (47) (1.6 \times 10^{- 19})}{(1.67 \times 10^{- 27}) (2.5 \times 10^{- 14})}}

H - O H

105^{o}

H - O H

\circ A

105^{o}

- 0.25

A wire of $10^{- 3} c m^{2}$ cross sectional area carries a current of 0.25 A, then current density is

3 \times 10^{8} m s^{- 1}

10 c m

1.5

2 \times 10^{8} m s^{- 1}

3 \times 10^{8} m s^{- 1}

Join BYJU'S Learning Program