This lecture covers NCERT Class 6 Science Chapter 11 Light, Shadows and Reflections. Following key. CBSE Videos for Class 6 Physics Light Shadow and Reflection. Class 6 Science. Light Shadow Reflection. Light: Light is a form of energy which helps us in seeing objects. When light falls on an object, some of the light gets.
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NCERT Solutions Class 6 Science Chapter 11 Light Shadow And Reflection - Updated For CBSE
Light shadow and reflection cannot see through an opaque object. Transparent translucent Formation of Shadow When light falls on an opaque object, a dark patch is formed on the other side of the object; if a screen is present on the other side.
Three things are required for formation of shadow, viz. The size of shadow depends on the distance of source of light and on the angle at which the light rays fall on light shadow and reflection object.
If the source of light is closer to the object, a larger shadow is formed than when the source of light is far from the object.
If the angle of incident light is smaller, the shadow is longer. On the other hand, if the angle of incident light is bigger, the shadow is smaller.
CBSE NCERT Class 6 Physics Light Shadow and Reflection
This explains, why our shadows are longer in the morning and evening and smaller in the noon. Structure of a pinhole camera: Pinhole camera A pinhole camera is simple light shadow and reflection. One can get an inverted and real light shadow and reflection in a pinhole camera.
Take a torch and direct beam of light to the mirror that your friend is holding. Adjust the direction of the torch so that some of the beam of light hits on your friend. This activity shows that the light you directed hits the mirror and bounces back to your friend. A mirror reflecting beam of light Q2.
Explain the manner in which light travels with the help of an activity.
KS2 Light | Which Objects Make Shadows or Reflections
Take a comb and fix it on one side of a wooden block. Fix a mirror on the other side as shown in the figure.
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Spread a dark coloured sheet of paper between the mirror and the comb. Send a beam of light from a torch through the comb. You get a pattern of light similar to that shown in the figure. This activity light shadow and reflection the manner in which light travels and gets reflected from a mirror.
Explain that light has the property of rectilinear propagation with an activity.
Take three pieces of cardboard. Stack the 3 pieces of cardboard and make a hole in the middle of each cardboard by using a thick nail.
Erect these cards up on the table at a short distance away from each other.