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प्रश्न
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
पर्याय
dispersion
scattering
Refraction
Reflection
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उत्तर
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called Refraction.
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संबंधित प्रश्न
What is lateral inversion? Explain by giving a suitable example.
A wall reflects light and a mirror also reflects light. What difference is three in the way they reflect light?
The boy walks towards the mirror at a speed of 1 m/s. At what speed does his image approach him?
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A man sits in an optician's chair looking into plane mirror which is 2 m away from him and views the image of a chart which faces the mirror and is 50 cm behind his head. How far away from his eyes does the chart appear to be?
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.
State two effects caused by the refraction of light.
A ray of light passes from air into a block of glass. Does it bend towards the normal or away from it?
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
Fill in the following blank with suitable word:
Light travelling along a normal is ...............refracted.
Fill in the following blank with suitable word:
Light bends when is passes from water into air. We say that it is ............
Name the phenomenon due to which a pencil partly immersed in water and held obliquely appears to be bent at the water surface.
State two factors on which the lateral displacement of the emergent ray depends.
How does the light have to enter the glass:
to produce a large amount of bending?
How does the light have to enter the glass:
for no refraction to happen?
The depth of a pond when seen from above appears to be less.
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (/), and the angle of refraction (r)
List in proper sequence the steps of the experiment for determining the approximate focal length of a given concave mirror by obtaining the image of a distant object.
Explain how the formation of a rainbow occurs.
A real image is formed by the light rays after reflection or refraction when they:
- actually meet or intersect with each other.
- actually converge at a point.
- appear to meet when they are produced in the backward direction.
- appear to diverge from a point.
Which of the above statements are correct?
Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.
Write scientific reason.
The bottom of a pond appears raised.
Observe the given figure and name the following.
| Ray AB | |
| Ray NM | |
| Ray MD | |
| ∠ r |
Explain the working of a periscope.
You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?
The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.
The phenomenon of light passing through the object is called ______.
Light bends as it passes from one medium to another. What is this phenomenon called?
Light travels fastest in a vacuum. Why?
The bending of light as it passes from one medium to another is called ______.
Light is refracted or bent while going from one medium to another because of its ______ changes.
A water tank appears shallower when it is viewed from the top due to refraction.
Twinkling of stars and Mirage are the two phenomena occurring due to refraction.
Match the following:
| Column I | Column II | ||
| 1. | r > 90 | a. | Light gazes at the surface of separation between the two modes. |
| 2. | r = 90 | b. | No refraction. |
| 3. | r < 90 | c. | Refracted ray away from the normal |
