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What Are the Important Differences Between Looking at a Photograph of Your Face and Looking at Yourself in a Plane Mirror? - Science

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प्रश्न

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

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उत्तर

       Photograph   Image in a Plane Mirror
 A photograph is made when a real image is projected on a photographic film. The image formed by a plane mirror is virtual and cannot be taken on a photograph.
The image is smaller in size compared to the actual object. The image is the same size as the object.
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अध्याय 4: Reflection of Light - Exercise 1 [पृष्ठ १७३]

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 4 Reflection of Light
Exercise 1 | Q 20 | पृष्ठ १७३

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संबंधित प्रश्न

Why does a ray of light bend when it travels from one medium to another?


Fill in the following blank with suitable word: 

Light travelling along a normal is ...............refracted.


What is meant by the 'angle of incidence' and the 'angle of refraction' for a ray of light?


Light travels more quickly through water than through glass. 

 Which is optically denser : water or glass? 

 


With the help of a diagram, show how when light falls obliquely on the side of a rectangular glass slab, the emergent ray is parallel to the incident ray.


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.


Fill in the blank and Explain the completed sentences.

 The change in ______ of light rays while going from one medium to another is called refraction.


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


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.


Explain the working of a periscope.


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 phenomenon of light passing through the object is called ______.


How does the light travel?


Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.


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


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


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


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