Question

Two glass slabs having thickness $10m$ and $20m$. Lateral displacement by glass slab having thickness $10m$ is $t$ then what is the lateral displacement by glass slab having thickness $20m$.

• A. Less than 't'
• B. None of the above
• C. Equal to 't'
• D. Greater than 't'

Answer 1

The correct option is D Greater than 't'

Lateral displacement of a glass slab increases as the following factors increases:

• Refractive index of slab
• Thickness of slab
• Angle of incidence (for thick slabs)

Since the thickness is increases, clearly, the lateral deviation will increase too.