Q39.What is the lateral shift of a ray refracted through a parallel-sided glass slab of thickness ' h ' in terms of the angle of incidence ' i ' and angle of refraction ' r ', if the glass slab is placed in air medium? (1) h tan(i−r) (2) h sin(i−r) tan r cos r (3) h (4) h cos(i−r) sin r
What This Question Tests
This question requires deriving or recalling the formula for lateral shift when light passes through a parallel-sided glass slab, based on Snell's Law and geometry.
Concepts Tested
Formulas Used
sin i / sin r = μ
Lateral shift = h sin(i-r) / cos r
📚 NCERT Sections This Tests
9.4 — Figures 9.27(A) And (B) Show Refraction Of A Ray In Air Incident At 60°
Physics Class 12 · Chapter 9
9.4 Figures 9.27(a) and (b) show refraction of a ray in air incident at 60° with the normal to a glass-air and water-air interface, respectively. Predict the angle of refraction in glass when the angle of incidence in water is 45° with the normal to a water-glass interface [Fig. 9.27(c)]. FIGURE 9.27
9.6 — A Prism Is Made Of Glass Of Unknown Refractive Index. A Parallel
Physics Class 12 · Chapter 9
9.6 A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40°. What is the refractive index of the material of the prism? The refracting angle of the prism is 60°. If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light.
9.16 — The Pin Appears Raised By 5.0 Cm. It Can Be Seen With An Explicit Ray
Physics Class 12 · Chapter 9
9.16 The pin appears raised by 5.0 cm. It can be seen with an explicit ray diagram that the answer is independent of the location of the slab (for small angles of incidence).
📋 Question Details
- Chapter
- Ray Optics
- Topic
- Refraction through a Glass Slab
- Year
- 2025
- Shift
- 23 Jan Shift 1
- Q Number
- Q39
- Type
- MCQ
- NCERT Ref
- Class 10 Physics Ch 10: Light – Reflection and Refraction; Class 12 Physics Ch 9: Ray Optics and Optical Instruments
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