मराठी

A Ray of Light Passes from Air into a Block of Glass. Does It Bend Towards the Normal Or Away from It?

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प्रश्न

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

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उत्तर

We know that air is a rarer medium and glass is a denser medium. When a ray of light goes from a rarer medium to a denser medium, it bends towards the normal. So, the light ray will bend towards the normal in the given case.

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पाठ 2: Refraction of Light - Exercise 1 [पृष्ठ ८२]

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लखमीर सिंह Physics Part 1 [English] Class 10
पाठ 2 Refraction of Light
Exercise 1 | Q 13. | पृष्ठ ८२

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

  Column I Column II Column III
1 Dispersion Long-sightedness Twinkling of stars
2 Refraction Splitting of white light into component colours Convex lens
3 Hypermetropia Change in the direction of the ray of light due to change in medium Spectrum of seven colours

If an object is placed at a distance of 10 cm in from of a plane mirror, how far would it be from its image?


State whether the following statement is true of false:
A student says that we can see an object because light from our eyes is reflected back by the object.


The letter F is placed in front of a plane mirror:

  1. How would its image look like when seen in a plane mirror?
  2. What is the name of the phenomenon involved?

What are the important differences between looking at a photograph of your face and looking at yourself in a plane mirror?


What is the difference between regular reflection of light and diffuse reflection of light? 


What type of reflection of light takes place from a cinema screen?


 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.


State two effects caused by the refraction of light.


What is meant by the ‘angle of incidence’ for a ray of light?


A small air bubble in a glass block when seen from above appears to be raised because of ______.


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 deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.


Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged.

Her friend noted the following observations from this demonstration:

  1. Glass is optically rarer than air.
  2. Air and glass allow light to pass through them with the same velocity.
  3. Air is optically rarer than glass.
  4. Speed of light through a denser medium is faster than that of a rarer medium.
  5. The ratio: sin of angle of incidence in the first medium to the ratio of sin of angle of refraction in the second medium, gives the refractive index of the second material with respect to the first one.

Which one of the combinations of the above statements given below is correct.


A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine. Support your answer with reason.


The phenomenon of light passing through the object is called ______.


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


Under what circumstances there won’t be any refraction of light when it enters from one medium to another?


When a light ray passes from a denser medium to a rarer medium, it bends:


According to the second law of refraction, for a given pair of media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction:


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