Identify the True or False statements.
a. A glass slab cannot deviate the light.
b. A glass slab can produce lateral displacement.
c. The shift produced by a slab depends ono the converging and diverging nature of beam.
d. Apparent shift in case of a slab always occurs in the direction of light ray travelling.
e. The shift produced by a slab can never exceed its thickness.

Explanation

a. True. The emergent ray is always parallel to the incident ray.
True. See the figure below.

c. False. The shift produced by a glass slab is always in the direction of incident light, irrespective of the converging or diverging nature of beam.
d. False. As shifting `s =t(1-(1)/(mu_("rel")))`
` mu_("rel")=(mu_("slab"))/(mu_("medium"))`
If `mu_("medium") gt mu_("slab")` , the value of `mu_("real")` will be less than 1 and shifting will be negative, i. e., opposite to direction of ray tralling
e. True. As we know shifting `s=t(1-(1)/(mu_("rel")))`
`mu_("rel")=(mu_("slab"))/(mu_("medium")) =(mu_(2))/(mu_(1))`
If `mu_(2) gt mu_(1)`, then `s lt t`
If `mu_(1) gt mu_(2)` , then shift (s) can be graeter than t only if `mu_(1)//mu_(2) gt 2` .