Advertisements
Advertisements
प्रश्न
Rainbow is a beautiful natural phenomenon. It is the combined effect of a natural three processes together produced by light. Write it into the circle.
Advertisements
उत्तर
Rainbow-
- Refraction
- Dispersion
- Total internal reflection
APPEARS IN
संबंधित प्रश्न
Study the following figure in which a student has marked the angle of incidence (∠i), angle of refraction (∠r), angle of emergence (∠e), angle of prism (∠A) and the angle of deviation (∠D). The correctly marked angles are
(a) ∠A and ∠i
(b) ∠A, ∠i and ∠r
(c) ∠A, ∠i, ∠e and ∠D
(d) ∠A, ∠i, ∠r and ∠D
As light rays pass from air into a glass prism, are they refracted towards or away from the normal?
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
A ray of light moving from an optically rarer to a denser medium
While performing the experiment to trace the path of a ray of light passing through a glass prism, four students marked the incident ray and the emergent ray in their diagrams in the manner shown below. 
(A) I
(B) II
(C) III
(D) IV
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
(A) is parallel to the incident ray
(B) perpendicular to the incident ray
(C) is parallel to the refracted ray
(D) bends at an angle to the direction of incident ray
Complete the ray diagram given below to show the nature of light produced on the screen.
The completed ray diagram is as shown below:
Differentiate between a glass slab and a glass prism.
Write three conditions necessary to obtain a pure spectrum on a screen. Name the instrument in which the conditions stated by you are fulfilled.
The sunlight can be split into its constituent colors using ______.
What is dispersion? Explain in detail.
What is Newton’s disc?
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
In the following diagram showing dispersion of white light by a glass prism, the colours 'P' and 'Q’ respectively are:
Observe the given diagram and answer the questions:
- Name the process shown in the figure.
- Name the colour that deviates the most.
- Name the colour that deviates the least.
- Name any one phenomenon in nature which is based on the above process.
- Define ‘spectrum’.
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Which colour will show the maximum angle of deviation and which colour will show the minimum angle of deviation?
