Login
Remember
Register
Home
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
Ask a Question
(i) Why does the sun appear reddish at sunset or sunrise? (ii) For which colour, the refractive index of prism material is maximum and
0
votes
asked
Mar 20, 2022
in
12th Physics
by
varun
(
6.7k
points)
(i) Why does the sun appear reddish at sunset or sunrise?
(ii) For which colour, the refractive index of prism material is maximum and minimum?
marks2
chapter9
#sub
Please
log in
or
register
to answer this question.
0
Answers
Categories
All categories
Maths
(8.6k)
Science
(14)
Physics
(3.4k)
11th Physics
(1.5k)
12th Physics
(1.9k)
Related questions
(i) What is the relation between critical angle and refractive index of a material? (ii) Does critical angle depend on the colour of light?
(i) Out of blue and red light, which is deviated more by a prism? Give reason. (ii) Give the formula that can be used to determine refractive index of material of a prism in minimum deviation
Three light rays, red (R) green (G) and blue (B) are incident on a right angled prism AB C at face AB. The , refractive indices of the material of the prism for red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively. Out of the three, which colour of ray will emerge out of face AC? Justify your answer. Trace the path of these rays after passing through face
(i) Fig. shows a cross-section of a ‘light pipe’ made of a glass fibre of refractive index 1.68. The outer covering of the pipe is made of a material of refractive index 1.44. What is the range of the angles of the incident rays with the axis of the pipe for which total reflections inside the pipe take place, as shown in the figure.(ii) What is the answer if there is no outer covering of the
(i) A ray PQ of light is incident on the face AB of a glass prism ABC (as shown in the figure) and emerges out of the face AC. Trace the path of the ray. Show that `/_i+/_e=/_A+/_delta` where, `delta` and e denote the angle of deviation and angle of emergence respectively. Plot a graph showing the variation of the angle of deviation as a function of angle of incidence. State the condition under which `/_delta` is minimum. (ii) Find out the relation between the refractive index `(mu)` of the glass prism and `/_A` for the case, when the angle