Advertisements
Advertisements
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?
Advertisements
उत्तर
When the incident ray is undergoing minimum deviation the angle of incidence is equal to the angle of emergence, i.e., ∠i – ∠e
संबंधित प्रश्न
When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.
- perpendicular
- parallel
- opposite
- concurrent
How must light travel out of a substance if it is not going to be refracted?
Fig shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) What is the line XX' called?
(iii) Complete the path of the incident ray PQ after passing through the lens.
(iv) The final emergent ray either meets XX' at a point or appears to come from a point on XX'. Label it as F, What is this point called?
Using the curve, how do you infer that for given prism, the angle of minimum deviation δmin is unique for the given light?
Why does a fisherman aim at the tail of fish during spearfishing?
State the relation between the refractive index μ and the velocity of light (vm) in that medium.
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
(a) Does the light speed up or slow down in the glass,
(b) Give the reason for your answer.
Calculate the velocity of light in a glass block of refractive index 1.5. (Velocity of light in air = 3 × 108 m/s)
