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What is Meant by 'Reflection of Light'? - Science

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प्रश्न

What is meant by 'reflection of light'?

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उत्तर

The process of sending back light rays that fall on the surface of an object is called reflection of light. 

  

 

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पाठ 4: Reflection of Light - Exercise 1 [पृष्ठ १७४]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 4 Reflection of Light
Exercise 1 | Q 26.1 | पृष्ठ १७४

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

What is lateral inversion? Explain by giving a suitable example.


 A boy with a mouth 5 cm wide stands 2 m away from a plane mirror. Where is his image and how wide is the image of his mouth?


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.


The image of an object formed by a plane mirror is:

(a) virtual
(b) real
(c) diminished
(d) upside-down


Name the phenomenon due to which a swimming pool appears less deep than it really is.


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


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


When a light ray passes from air into glass, what happens to its speed? Draw a diagram to show which way the ray of light bends. 


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.


Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by:
(a) a concave mirror, and (b) a convex mirror


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


Define the principal focus of a concave mirror.


What is atmospheric reflection? Explain with the help of a labelled diagram that the position of a star as seen by us is not its true position. 


Choose the correct option from given alternative:
A real image is formed by the light rays after reflection or refraction when they:
(A) actually meet or intersect with each other.
(B) actually converge at a point
(C) appear to meet when they are produced in the backward direction.
(D) appear to diverge from a point.
Which of the above statements are correct?


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


The speed of light varies in different media.


Write scientific reason.

The sun appears on the western horizon for some time after sunset.


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.


Assertion and reasoning type

  1. Assertion: If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small
  2. Reason: Refractive index of the medium is inversely proportional to the velocity of the light

How do twinkling stars occur? (or) what is the cause of the twinkling of stars?


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