A postage stamp kept below a rectangular glass block of refractive index 1.5 when viewed from vertically above it, appears to be raised by 7.0 mm. Calculate the thickness of the glass slab. - Physics | Shaalaa.com

QUESTION5. Refractive index of a rectangular glass slab is μ=3... | Filo

A ray of light is incident on a rectangular block of glass of index of refraction 1.450 at an angle of 40^∘, as shown in Figure 3.27 . If the thickness of the block is 4.00 cm, find the amount d by which the ray is deviated. | Numerade

Day 265/365 of sharing my teaching practises Topic : Refraction at zero angle of incidence .Snell’s law remains valid even at zero degrees incidence. In this case, the ray does not bend, yet refraction still occurs due to the change in speed of light across media, not merely because of angular deviation. A remarkable mathematical insight appears in the air–water case: applying Snell’s law at 0° leads to the indeterminate form 0 ÷ 0, which resolves elegantly to the refractive index of water, 1.33

Light Reflection and Refraction Class 10 in One-Shot | CBSE Class 10 Boards 2023 | Crash Course 2.0