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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, - Science

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प्रश्न

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.

थोडक्यात उत्तर
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उत्तर

The pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water due to the refraction of light. The refractive index of different mediums is different. The refractive index of kerosene and turpentine is more than the water, due to this the pencil will appear to bend more in case of kerosene or turpentine than that in case of water. 

Therefore the pencil will not appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine.

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पाठ 10: Light – Reflection and Refraction - Short Answer Questions [पृष्ठ ८३]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
पाठ 10 Light – Reflection and Refraction
Short Answer Questions | Q 22. | पृष्ठ ८३

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

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.


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


State two effects caused by the refraction of light.


With the help of a labelled diagram, explain why a tank full of water appears less deep than it actually is. 


When a ray of light travelling in glass enters into water obliquely:

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


A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:

(a) 0°
(b) 45°
(c) 90°
(d) 120°


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

 What is the angle of incidence?


A ray of light when passes from glass to air, bends towards the normal.


The depth of a pond when seen from above appears to be less.


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


When a ray of light travels from water to air, it bends ............. the normal.


What do you understand by refraction of light?


List in proper sequence the steps of the experiment for determining the approximate focal length of a given concave mirror by obtaining the image of a distant object.


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


What is refractive index?


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


Why a pencil partly immersed in water appears to be bent at the water surface.


The bottom of swimming pool appears to be less deep than the actual one because of


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