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Write scientific reason. The coin disappears in a vessel as it is seen from a specific location. But as soon as the water is poured into the vessel to a certain level, the coin appears.

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प्रश्न

Write a scientific reason.

The coin disappears in a vessel as it is seen from a specific location. But as soon as the water is poured into the vessel to a certain level, the coin appears.

Write a scientific reason.

The coin in the disappeared to have been seen from a specific location. But as soon as the water is poured into the pot to a certain level, the coin appears.

कारण बताइए
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उत्तर

  1. Light rays coming from the coin emerge out of water and change their direction due to the refraction of light.
  2. Hence, as soon as the water is poured into the pot to a certain level, the coin appears.
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अध्याय 6: Refraction of light - Write scientific reasons [पृष्ठ २४]

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
अध्याय 6 Refraction of light
Write scientific reasons | Q 3. | पृष्ठ २४

संबंधित प्रश्न

What is refraction of light?


Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .


What is lateral inversion? Explain by giving a suitable example.


 An extended object in the form of an arrow pointing upward has been placed in front of a plane mirror. Draw a labelled ray-diagram to show the formation of its image.


 Write all the capital letters of the alphabet which look the same in a plane mirror.


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

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


The figure given alongside shows the image of a clock as seen in a plane mirror. The correct time is:


A man stands 10 m in front of a large plane mirror. How far must the walk before he is 5 m away from his image?


Explain how to read the following message which was found on some blotting paper:


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


When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?


A ray of light passes from air into a block of glass. Does it bend towards the normal or away from it?


What is meant by ‘refraction of light’?


A vertical ray of light strikes the horizontal surface of some water: 

What is the angle of refraction? 


How does the light have to enter the glass: 

 to produce a large amount of bending?


Water is optically .......... than air.


What is the cause of refraction of light when it passes from one medium to another?


A ray of light passes from medium 1 to medium 2. Which of the following quantities of the refracted ray will differ from that of the incident ray: Speed, intensity, frequency, wavelength? 


A ray of light A incident from air suffers partial reflection and refraction at the boundary of water. 

  1. Complete the diagram showing (i) the reflected ray B and (ii) the refracted ray C.
  2. How are the angles of incidence i and refraction r related?

Define the principal focus of a concave mirror.


List four characteristics of the image formed by a concave lens of focal length 20 cm when the object is placed at a distance of 40 cm from its optical centre. 


Due to _______ pencil looks bent in water, in the given experiment.


Light changes its direction when going from one transparent medium to another transparent medium. This is called _______.


Right or wrong sentence.

The incident rays and refracted rays are on opposite sides of the column.


The speed of light varies in different media.


Write scientific reason.

A pencil appears to be broken near the surface of water.


Observe the given figure and name the following.

Ray AB  
Ray NM  
Ray MD  
∠ r  

Observe the given figure and write appropriate phenomenon of light in the box.


Explain with diagrams how refraction of incident light takes place from

  1. rarer to denser medium
  2. denser to rarer medium
  3. normal to the surface separating the two media.

The angle of incidence for a ray of light having zero reflection angle is ______.


The angle of incidence from air to glass at the point O on the hemispherical glass slab is.


In the above diagram light is travelling through different media. It is noted by a scientist that ∠1= ∠3 = ∠4 but ∠2 < ∠1. Which of the following statement would be correct?


Which object use the reflection of light?


Light travels fastest in a vacuum. Why?


Mirage is an example of refraction and the total internal reflection of light.


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