मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write scientific reason. A pencil appears to be broken near the surface of water. - Science and Technology 1

Advertisements
Advertisements

प्रश्न

Write scientific reason.

A pencil appears to be broken near the surface of water.

थोडक्यात उत्तर
स्पष्ट करा

उत्तर

  1. When one look at the portion of the pencil that is inside the water, light travels from water to air via glass.
  2. This light ray changes the medium and undergoes refraction.
  3. As a result, the pencil inside the water appears to be broken near the surface of water.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Refraction of light - Write scientific reasons

संबंधित प्रश्‍न

Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .


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?


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?


 Which type of reflection of light leads to the formation of images?


 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?


The boy walks towards the mirror at a speed of 1 m/s. At what speed does his image approach him?


What is meant by 'reflection of light'?


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.


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


A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is ______.


A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.


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


Which phenomenon of light makes the water to appear shallower than it really is?


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


How does the light have to enter the glass: 

 to produce a large amount of bending?


How does the light have to enter the glass: 

 for no refraction to happen? 


Water is optically denser than glass.


The speed of light is more in glass than in water.


Water is optically .......... than air.


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


Define the principal focus of a concave mirror.


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.


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?


Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.


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.


Observe the given figure and name the following.

Ray AB  
Ray NM  
Ray MD  
∠ r  

What is refractive index?


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


Light travels fastest in a vacuum. Why?


Mirage is an example of refraction and the total internal reflection of light.


When a ray of light travels normal to the given surface, then the angle of refraction is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×