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प्रश्न
In the diagram below, PQ is a ray of light incident on a rectangular glass block.
How are the angles ‘i’ and ‘e’ related to each other?
उत्तर
When the incident ray is undergoing minimum deviation the angle of incidence is equal to the angle of emergence, i.e., ∠i – ∠e
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संबंधित प्रश्न
What is a spectrum?
A student traces the path of a ray of light passing through a rectangular glass slab and marks the angle of incidence i, angle of refraction r and angle of emergence e, as shown.
The correctly marked angle(s) is/are
(A) ∠ i only
(B) ∠ e only
(C) ∠ r only
(D) ∠ i and ∠ e
Name one factor that affects the lateral displacement of light as it passes through a rectangular glass slab.
In the adjacent diagram, AO is a ray of light incident on a rectangular glass slab.
- Complete the path of the ray till it emerges out of the slab.
- In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles i and r?
- Mark angles of emergence by the letter e. How are the angles i and e related?
- Which two rays are parallel to each other? Name them.
- Indicate in the diagram the lateral displacement between the emergent ray and the incident ray. State one factor that affects the lateral displacement.
A coin is places at the bottom of a beaker containing water (refractive index = 4/3) to a depth of 12 cm. By what height the coin appears to be raised when seen from vertically above?
Why do the faces of persons sitting around campfire appear to shimmer?
State the factors on which the angle of deviation depends.
Define the term refractive index of a medium in terms of velocity of light.
Why does the sun appear bigger during sunset or sunrise?
Observe the figure and name the ray AB, ray CD, ray GH.
