मराठी

State Whether the Following Statement is True Or False: Refraction Occurs Because Light Slows Down in Denser Materials.

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प्रश्न

State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.

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उत्तर

True.
The refraction of light is due to the change in the speed of light on going from one medium to other. The speed of light ray slows down in denser materials.

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पाठ 2: Refraction of Light - Exercise 1 [पृष्ठ २२०]

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लखमीर सिंह Physics [English] Class 10
पाठ 2 Refraction of Light
Exercise 1 | Q 17 | पृष्ठ २२०

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Which property of light makes a pencil cast a shadow when it is held in front of a light source?


Where is the image when you look at something in a mirror?


What is meant by 'reflection of light'?


 Explain why, though both a plane mirror and a sheet of paper reflect light but we can see the image of our face in a plane mirror but not in a sheet of paper.


The angle of reflection is equal to the angle of incidence:

(a) always
(b) sometimes
(c) under special conditions
(d) never


The image of an object formed by a plane mirror is:

(a) virtual
(b) real
(c) diminished
(d) upside-down


If a ray of light goes form a denser medium to a rarer medium, will it bend towards the normal or away from the normal?


Fill in the following blank with suitable word: 

Light travelling along a normal is ...............refracted.


With the help of a diagram, show how when light falls obliquely on the side of a rectangular glass slab, the emergent ray is parallel to the incident ray.


The speed of light is more in glass than in water.


Fill in the blank and Explain the completed sentences.

 The change in ______ of light rays while going from one medium to another is called refraction.


Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m s−1.


What is atmospheric reflection? Explain with the help of a labelled diagram that the position of a star as seen by us is not its true position. 


The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.


A real image is formed by the light rays after reflection or refraction when they:

  1. actually meet or intersect with each other.
  2. actually converge at a point.
  3. appear to meet when they are produced in the backward direction.
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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.


The speed of light varies in different media.


Write scientific reason.

The sun appears on the western horizon for some time after sunset.


State whether true or false. If false, correct the statement.

The angle of deviation depends on the refractive index of the glass.


Light bends as it passes from one medium to another. What is this phenomenon called?


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