हिंदी

A Ray of Light Goes from Water into Air. Will It Bend Towards the Normal Or Away from the Normal?

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प्रश्न

A ray of light goes from water into air. Will it bend towards the normal or away from the normal?

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उत्तर

When a ray of light travels from a denser medium (water) to a rarer medium (air), it bends away from the normal. Therefore, the ray of light will bend away from the normal in the given case.

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अध्याय 2: Refraction of Light - Exercise 1 [पृष्ठ २१९]

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लखमीर सिंग Physics [English] Class 10
अध्याय 2 Refraction of Light
Exercise 1 | Q 9 | पृष्ठ २१९

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संबंधित प्रश्न

A ray of light strikes a plane mirror such that its angle of incidence is 30°. What angle does the reflected ray make with the mirror surface?


With the help of a labelled ray-diagram, describe how a plane mirror forms an image of a point source of light placed in front of it. State the characteristics of the image formed in a plane mirror.


 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.


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?

 


Light travelling from a denser medium to a rarer medium along a normal to the boundary:

(a) is refracted towards the normal
(b) is refracted away from the normal
(c) goes along the boundary
(d) is not refracted


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

What is the angle of refraction? 


Light travels at a lower speed in water than in air.


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?

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. 


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


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


The incident rays and refracting rays are on opposite sides of the normal.


The speed of light varies in different media.


Observe the given figure and name the following.

Ray AB  
Ray NM  
Ray MD  
∠ r  

The refractive index of a transparent medium is always greater than ______.


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?


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 surface will not reflect most of the light falling on them?


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


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