Stand in front of a mirror and look closely at your tongue. How does the surface look? Can you see any tiny bumps on the surface?
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Image formed by a plane mirror is (a) virtual, behind the mirror and enlarged. (b) virtual, behind the mirror
(b) virtual, behind the mirror and of the same size as the object.
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No matter how far you stand from a mirror your image appears erect. The mirror is likely to be
A plane mirror forms an erect image of equal size; while a convex mirror forms an erect image of smaller size irrespective of the distance of object from the mirror,...
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How can you distinguish between a plane mirror, a concave mirror and a convex mirror without touching them?
By observing the virtual images formed by the three mirrors, we can distinguish between the mirrors as: (i) Plane mirror will produce an image of the same size, (ii) Concave mirror will...
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In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
No, to see the reflection, source of light is required. We can see only in the presence of light.
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For this activity find a quite place in your school. Tell one of your friends to stand at a small distance and ask him to say something softly.
When I put my hands behind my ears, the sound was sharper
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If someone were to put a few seeds of saunf(aniseed) on your tongue, would you able to tell with your eyes closed? How?
Perhaps, because even if we do not taste, we can recognize it by its smell
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On which part of the tongue could you get the most taste in front, at the back, on the left or right side of the tongue?
In front side. (Suppose sugar has been tasted). Note: Different parts of tongue have different taste zones
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Use a clean cloth to wipe the front part of your tongue so that it is dry. Put some sugar or jiggery there. Could you taste anything?
No, I could not taste anything. It is because we get the taste only when the food mixes up with saliva and reaches taste buds present on the tongue.
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Put your hand on your chest, when your breathe in, does your chest come out or go in?
On putting the hands on the chest, when I breathed in, my chest comes out.
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Stand with this snake below a fan. Look in which direction it moves. Take this paper snake to different places and observe its movement.
On taking this snake below a fan, it moves in the anticlockwise direction. This is because, here the air is moving downwards.
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