मराठी

In an Experiment of Finding the Refractive Index of Glass, If Blue Light is Replaced by the Red Light, How Will the Refractive Index of Glass Change? - Physics

Advertisements
Advertisements

प्रश्न

In an experiment of finding the refractive index of glass, if blue light is replaced by the red light, how will the refractive index of glass change? Give reason in support of your answer.

एका वाक्यात उत्तर

उत्तर

In glass, the speed of blue light is less than that of the red light. Now, the refractive index is μ = c/v. Hence, the refractive index of glass for red light will decrease as compared to that for blue light.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Refraction of Light at Plane Surfaces - Exercise 4 (A) 1 [पृष्ठ ८१]

APPEARS IN

सेलिना Physics [English] Class 10 ICSE
पाठ 4 Refraction of Light at Plane Surfaces
Exercise 4 (A) 1 | Q 15 | पृष्ठ ८१

संबंधित प्रश्‍न

Write a short note on dispersion of light.


Study the following four experimental set-ups I, II, III and IV for the experiment, "To trace the path of a ray of light through a rectangular glass slab."

Which of the marked set-ups is likely to give best results (P1 and P2 are the positions of pins fixed on the incident ray)?

(A) I

(B) II

(C) III

(D) IV


Which of the above wavelengths has a higher frequency?


A ray of light enters a glass slab ABDC as shown in figure and strikes at the centre O of the circular part AC of the slab. The critical angle of glass is 42°. Complete the path of the ray till it emerges out from the slab. Mark the angles in the diagram wherever necessary. 


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 traces the path of a ray of white light through a rectangular glass slab and marks, the angles of incidence (∠i) , refraction (∠r) and emergence (∠e) as shown. Which angle or angles has he not marked correctly?

(A) ∠i only

(B) ∠i and ∠r

(C) ∠i and ∠e

(D) ∠r and ∠e


Write the SI unit for refractive index.

Which colour of light travels fastest in any medium except air?


A ray of light strikes the surface at a rectangular glass slab such that the angle of incidence is 45o.

In each case, draw diagram to show the path taken by the ray as it passes through the glass slab and emerges from it.


Draw a diagram of a prism and label:
(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×