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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? - Science

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प्रश्न

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?

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उत्तर

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

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पाठ 5: Refraction of Light - Exercise 1 [पृष्ठ २१९]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 5 Refraction of Light
Exercise 1 | Q 2 | पृष्ठ २१९

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Write the word AMBULANCE as it would appear when reflected in a plane mirror. Why is it sometimes written in this way (as its mirror image) on the front of an ambulance?


 State the uses of plane mirrors.


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?

 


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


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


Light travels more quickly through water than through glass. 

 Which is optically denser : water or glass? 

 


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

 What is the angle of incidence?


Image is formed by a mirror due to refraction of light.


Air is optically .......... than glass.


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?

The size of image of an object by a convex lens of focal length 20 cm is observed to be reduced to  `1/3` rd of its size . Find the distance of the object from the optical centre of the lens . 


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


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


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.


When light passes from one medium to another the ray gets bent. This property of light is called ______.


Light is refracted or bent while going from one medium to another because of its ______ changes.


Which is optically denser out of the two medium M1& M2 having the refractive indices = 1.71 and 1.36 respectively?


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

In refraction of light through a glass slab, the directions of the incident ray and the refracted ray are ______.


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