JIPMER2006PhysicsRay Optics
The time taken by light to pass through 4 mm thick glass slab of refractive index 1.5 will be : (velocity of light in air =3 10^8 ~m / s )
Options
- A8 10⁻¹¹ ~s
- B2 10⁻¹¹ ~s
- C8 10⁻⁸ ~s
- D2 10⁻⁸ ~s
Correct answer
B. 2 10⁻¹¹ ~s
Step-by-step solution
Time taken by light aligned t & = d c & = 1.5 4 10⁻³ 3 10^8 =2 10⁻¹¹ ~s aligned