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Write the Si Unit for Refractive Index. - Physics

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प्रश्न

Write the SI unit for refractive index.
एक पंक्ति में उत्तर

उत्तर

Refractive index being the ratio of similar quantities has no units.
 
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अध्याय 2: Light - Exercise 2.1 i [पृष्ठ ८८]

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फ्रैंक Physics - Part 2 [English] Class 10 ICSE
अध्याय 2 Light
Exercise 2.1 i | Q 7 | पृष्ठ ८८

संबंधित प्रश्न

Four students P, Q, R and S traced the path of a ray of light passing through a glass slab for an angle of incidence 40° and measured the angle of refraction. The values as measured them were 18°; 22°; 25° and 30° respectively. The student who has performed the experiment methodically is

(A) P

(B) Q

(C) R

(D) S


Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?


The following diagram shows a 60°, 30°, 90° glass prism of critical angle 42°, Copy the diagram and complete the path of incident ray AB emerging out of the prism marking the angle of incidence on each surface.


A total reflecting right angled isosceles prism can be used to deviate a ray of light through:
(a) 30° (b) 60° (c) 75° (d) 90°. 


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


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 XX' called?

(iii) Complete the ray diagram and show the path of the incident ray PQ after passing through the lens.

(iv) The final emergent ray will either meet XX' at a point or appear to come from a point on XX'. what is the point called?


 Draw a diagram to show the splitting of white light into its constituent colours.


State the relation between the refractive index μ and the velocity of light (vm) in that medium.


What is the total reflecting prism?


The refractive index of glass with respect to air is 1.5. What is the value of the refractive index of air with respect to glass?


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