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प्रश्न
The critical angle for glass-air interface is :
विकल्प
24°
48°
42°
45°
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उत्तर
42°
संबंधित प्रश्न
Draw diagrams to show the refraction of light from
- air to glass, and
- glass to air. In each diagram, label the incident ray, refracted ray, the angle of incidence
- and the angle of refraction (r).
When a ray of light from air enters a denser medium, it ______.
What do you understand by the statement the refractive index of glass is 1.5 for white light?
A student has traced the path of a ray of light through a glass slab as follows. If you are asked to label 1, 2, 3 and 4, the correct sequencing of labeling ∠i, ∠e, ∠r and lateral displacement respectively is
(a) 2, 1, 3, 4
(b) 1, 2, 3, 4
(c) 1, 3, 2, 4
(d) 1, 3, 4, 2
Write a relation between the angle of incidence (i), angle of emergence (e), angle of the prism (A), and angle of deviation (d) for a ray of light passing through an equilateral prism.
In what condition a prism is said to be in the position of minimum deviation? What is the direction of the refracted ray inside the prism in this condition?
You are provided with a printed piece of paper. Using this paper how will you differentiate between a convex lens and a concave lens?
Complete the ray diagram showing its emergence into the air after passing through the prism.
Calculate the velocity of light in a glass block of refractive index 1.5. (Velocity of light in air = 3 × 108 m/s)
What is lateral displacement?
